libnss-mysql: mysql_query failed: Lost connec

[mirmir]

Hello, I have server on:

# uname -srm
FreeBSD 6.1-STABLE i386

and:
# pkg_info| grep mysql
libnss-mysql-1.5_2  NSS module using a MySQL database for backend
mysql-client-4.1.20 Multithreaded SQL database (client)
in one jailed system
and:
# pkg_info| grep mysql
libnss-mysql-1.5_2  NSS module using a MySQL database for backend
mysql-client-4.1.21 Multithreaded SQL database (client)
mysql-server-4.1.21 Multithreaded SQL database (server)
on the other jailed system

In my maillog in postfix i have error like:

libnss-mysql: mysql_query failed: Lost connection to MySQL server during query, trying again (2)

my mysql config is like:

[client]
port            = 3306
socket          = 153.xxx.xxx.xxx
[mysqld]
port            = 3306
socket          = 153.xxx.xxx.xxx
skip-locking
key_buffer = 256M
max_allowed_packet = 128M
table_cache = 256
sort_buffer_size = 1M
read_buffer_size = 1M
read_rnd_buffer_size = 4M
myisam_sort_buffer_size = 64M
thread_cache_size = 8
query_cache_size= 16M
thread_concurrency = 8
set-variable=wait_timeout=60
log-bin
server-id       = 1
[mysqldump]
quick
max_allowed_packet = 128M
[mysql]
no-auto-rehash
max_allowed_packet = 128M
[isamchk]
key_buffer = 128M
sort_buffer_size = 128M
read_buffer = 2M
write_buffer = 2M
[myisamchk]
key_buffer = 128M
sort_buffer_size = 128M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout

My question is, why I see this error:

libnss-mysql: mysql_query failed: Lost connection to MySQL server during query, trying again (2)

Thanks for answers.

[Ben Goodwin]

This error is normal *IF* (in your case) 60 seconds has passed since that particular process made a passwd/shadow/group query.  It's normal and can be ignored.  If you're seeing something actually fail due to that error message, however, let me know.