Something peculiar happened to mysql during a reboot and now vpopmail
authdaemond is having trouble completing authentications....

/var/log/maillog says:

Aug 24 08:36:15 hostname authdaemond: vmysql: sql error[3]: MySQL server
has gone away

This problem is spotty though.  I have several successful authentications
before this error occurs.  I then have to restart mysqld before I can get
any other authentications to succeed.  I am still able to use the mysql
client to connect to the server for an interactive session.

What seems strange to me is that there are only two mysql daemons running:

root     23923  0.0  0.1  5060 1108 pts/0    S    09:13   0:00 /bin/sh
/usr/bin/safe_mysqld --defaults-file=/etc/my.cnf

mysql    23956  0.0  0.5 38620 5656 pts/0    Sl   09:13   0:00
/usr/libexec/mysqld --defaults-file=/etc/my.cnf --basedir=/var/lib
--datadir=/var/lib/mysql --user=mysql
--pid-file=/var/run/mysqld/ --skip-locking

Every other instance of mysql 3.23.x I've ever run has about 10 child
threads running, so this seems strange to see only one child thread.

I have not updated any packages on this box recently.  None at all, I swear.

Suggestions to investigate?  Googling on the "MySQL server has gone away"
is a wild goose chase.

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