>Какие версии mysql?
>Там, куда заливается:
>mysql> SHOW VARIABLES;
>
>Значение max_allowed_packet какое?

ОС FreeBSD 6.1
mysql-server-4.1.21
max_allowed_packet  =  1047552

+---------------------------------+---------------------------------------------------------+
| Variable_name                   | Value                                                   |
+---------------------------------+---------------------------------------------------------+
| back_log                        | 50                                                      |
| basedir                         | /usr/local/                                             |
| bdb_cache_size                  | 8388600                                                 |
| bdb_home                        | /var/db/mysql/                                          |
| bdb_log_buffer_size             | 131072                                                  |
| bdb_logdir                      |                                                         |
| bdb_max_lock                    | 10000                                                   |
| bdb_shared_data                 | OFF                                                     |
| bdb_tmpdir                      | /var/tmp/                                               |
| binlog_cache_size               | 32768                                                   |
| bulk_insert_buffer_size         | 8388608                                                 |
| character_set_client            | utf8                                                    |
| character_set_connection        | utf8                                                    |
| character_set_database          | utf8                                                    |
| character_set_results           | utf8                                                    |
| character_set_server            | utf8                                                    |
| character_set_system            | utf8                                                    |
| character_sets_dir              | /usr/local/share/mysql/charsets/                        |
| collation_connection            | utf8_general_ci                                         |
| collation_database              | utf8_general_ci                                         |
| collation_server                | utf8_general_ci                                         |
| concurrent_insert               | ON                                                      |
| connect_timeout                 | 5                                                       |
| datadir                         | /var/db/mysql/                                          |
| date_format                     | %Y-%m-%d                                                |
| datetime_format                 | %Y-%m-%d %H:%i:%s                                       |
| default_week_format             | 0                                                       |
| delay_key_write                 | ON                                                      |
| delayed_insert_limit            | 100                                                     |
| delayed_insert_timeout          | 300                                                     |
| delayed_queue_size              | 1000                                                    |
| expire_logs_days                | 0                                                       |
| flush                           | OFF                                                     |
| flush_time                      | 0                                                       |
| ft_boolean_syntax               | + -><()~*:""&|                                          |
| ft_max_word_len                 | 84                                                      |
| ft_min_word_len                 | 4                                                       |
| ft_query_expansion_limit        | 20                                                      |
| ft_stopword_file                | (built-in)                                              |
| group_concat_max_len            | 1024                                                    |
| have_archive                    | NO                                                      |
| have_bdb                        | YES                                                     |
| have_blackhole_engine           | NO                                                      |
| have_compress                   | YES                                                     |
| have_crypt                      | YES                                                     |
| have_csv                        | NO                                                      |
| have_example_engine             | NO                                                      |
| have_geometry                   | YES                                                     |
| have_innodb                     | YES                                                     |
| have_isam                       | NO                                                      |
| have_ndbcluster                 | NO                                                      |
| have_merge_engine               | YES                                                     |
| have_openssl                    | NO                                                      |
| have_query_cache                | YES                                                     |
| have_raid                       | NO                                                      |
| have_rtree_keys                 | YES                                                     |
| have_symlink                    | YES                                                     |
| init_connect                    |                                                         |
| init_file                       |                                                         |
| init_slave                      |                                                         |
| innodb_additional_mem_pool_size | 20971520                                                |
| innodb_autoextend_increment     | 8                                                       |
| innodb_buffer_pool_awe_mem_mb   | 0                                                       |
| innodb_buffer_pool_size         | 268435456                                               |
| innodb_data_file_path           | ibdata1:10M:autoextend                                  |
| innodb_data_home_dir            | /var/db/mysql/                                          |
| innodb_fast_shutdown            | ON                                                      |
| innodb_file_io_threads          | 4                                                       |
| innodb_file_per_table           | OFF                                                     |
| innodb_flush_log_at_trx_commit  | 1                                                       |
| innodb_flush_method             |                                                         |
| innodb_force_recovery           | 0                                                       |
| innodb_lock_wait_timeout        | 50                                                      |
| innodb_locks_unsafe_for_binlog  | OFF                                                     |
| innodb_log_arch_dir             | /var/db/mysql/                                          |
| innodb_log_archive              | OFF                                                     |
| innodb_log_buffer_size          | 8388608                                                 |
| innodb_log_file_size            | 67108864                                                |
| innodb_log_files_in_group       | 2                                                       |
| innodb_log_group_home_dir       | /var/db/mysql/                                          |
| innodb_max_dirty_pages_pct      | 90                                                      |
| innodb_max_purge_lag            | 0                                                       |
| innodb_mirrored_log_groups      | 1                                                       |
| innodb_open_files               | 300                                                     |
| innodb_table_locks              | ON                                                      |
| innodb_thread_concurrency       | 8                                                       |
| interactive_timeout             | 28800                                                   |
| join_buffer_size                | 131072                                                  |
| key_buffer_size                 | 268435456                                               |
| key_cache_age_threshold         | 300                                                     |
| key_cache_block_size            | 1024                                                    |
| key_cache_division_limit        | 100                                                     |
| language                        | /usr/local/share/mysql/english/                         |
| large_files_support             | ON                                                      |
| lc_time_names                   | en_US                                                   |
| license                         | GPL                                                     |
| local_infile                    | ON                                                      |
| locked_in_memory                | OFF                                                     |
| log                             | OFF                                                     |
| log_bin                         | ON                                                      |
| log_error                       |                                                         |
| log_slave_updates               | OFF                                                     |
| log_slow_queries                | OFF                                                     |
| log_update                      | OFF                                                     |
| log_warnings                    | 1                                                       |
| long_query_time                 | 10                                                      |
| low_priority_updates            | OFF                                                     |
| lower_case_file_system          | OFF                                                     |
| lower_case_table_names          | 0                                                       |
| max_allowed_packet              | 1047552                                                 |
| max_binlog_cache_size           | 4294967295                                              |
| max_binlog_size                 | 1073741824                                              |
| max_connect_errors              | 10                                                      |
| max_connections                 | 100                                                     |
| max_delayed_threads             | 20                                                      |
| max_error_count                 | 64                                                      |
| max_heap_table_size             | 16777216                                                |
| max_insert_delayed_threads      | 20                                                      |
| max_join_size                   | 4294967295                                              |
| max_length_for_sort_data        | 1024                                                    |
| max_prepared_stmt_count         | 16382                                                   |
| max_relay_log_size              | 0                                                       |
| max_seeks_for_key               | 4294967295                                              |
| max_sort_length                 | 1024                                                    |
| max_tmp_tables                  | 32                                                      |
| max_user_connections            | 0                                                       |
| max_write_lock_count            | 4294967295                                              |
| myisam_data_pointer_size        | 4                                                       |
| myisam_max_extra_sort_file_size | 2147483648                                              |
| myisam_max_sort_file_size       | 2147483647                                              |
| myisam_recover_options          | OFF                                                     |
| myisam_repair_threads           | 1                                                       |
| myisam_sort_buffer_size         | 67108864                                                |
| myisam_stats_method             | nulls_unequal                                           |
| net_buffer_length               | 16384                                                   |
| net_read_timeout                | 30                                                      |
| net_retry_count                 | 1000000                                                 |
| net_write_timeout               | 60                                                      |
| new                             | OFF                                                     |
| old_passwords                   | OFF                                                     |
| open_files_limit                | 11095                                                   |
| pid_file                        | /var/db/mysql/mysql.pid                       |
| port                            | 3306                                                    |
| preload_buffer_size             | 32768                                                   |
| prepared_stmt_count             | 0                                                       |
| protocol_version                | 10                                                      |
| query_alloc_block_size          | 8192                                                    |
| query_cache_limit               | 1048576                                                 |
| query_cache_min_res_unit        | 4096                                                    |
| query_cache_size                | 16777216                                                |
| query_cache_type                | ON                                                      |
| query_cache_wlock_invalidate    | OFF                                                     |
| query_prealloc_size             | 8192                                                    |
| range_alloc_block_size          | 2048                                                    |
| read_buffer_size                | 1044480                                                 |
| read_only                       | OFF                                                     |
| read_rnd_buffer_size            | 4190208                                                 |
| relay_log_purge                 | ON                                                      |
| relay_log_space_limit           | 0                                                       |
| rpl_recovery_rank               | 0                                                       |
| secure_auth                     | OFF                                                     |
| server_id                       | 1                                                       |
| skip_external_locking           | ON                                                      |
| skip_networking                 | OFF                                                     |
| skip_show_database              | OFF                                                     |
| slave_net_timeout               | 3600                                                    |
| slave_transaction_retries       | 0                                                       |
| slow_launch_time                | 2                                                       |
| socket                          | /tmp/mysql.sock                                         |
| sort_buffer_size                | 1048568                                                 |
| sql_mode                        |                                                         |
| sql_notes                       | ON                                                      |
| sql_warnings                    | ON                                                      |
| storage_engine                  | MyISAM                                                  |
| sync_binlog                     | 0                                                       |
| sync_frm                        | ON                                                      |
| sync_replication                | 0                                                       |
| sync_replication_slave_id       | 0                                                       |
| sync_replication_timeout        | 0                                                       |
| system_time_zone                | UTC                                                     |
| table_cache                     | 256                                                     |
| table_type                      | MyISAM                                                  |
| thread_cache_size               | 8                                                       |
| thread_stack                    | 196608                                                  |
| time_format                     | %H:%i:%s                                                |
| time_zone                       | SYSTEM                                                  |
| tmp_table_size                  | 33554432                                                |
| tmpdir                          |                                                         |
| transaction_alloc_block_size    | 8192                                                    |
| transaction_prealloc_size       | 4096                                                    |
| tx_isolation                    | REPEATABLE-READ                                         |
| version                         | 4.1.21-log                                              |
| version_bdb                     | Sleepycat Software: Berkeley DB 4.1.24: (July 19, 2006) |
| version_comment                 | FreeBSD port: mysql-server-4.1.21                       |
| version_compile_machine         | i386                                                    |
| version_compile_os              | portbld-freebsd6.1                                      |
| wait_timeout                    | 28800                                                   |
+---------------------------------+---------------------------------------------------------+
197 rows in set (0.04 sec)