[Dovecot] CentOS yum update causing died unexpectedly

Running CentOS 5.x running a postfix/dovecot implementation. Dovecot 1.1.8.

I just ran a full system update in my dev environment, and now I'm occasionally getting: Mar 26 07:15:43 example dovecot: auth(default): worker-server(test222@int.example.com,127.0.0.1): Aborted: Worker process died unexpectedly

in /var/log/maillog. Any suggestions on where to look to figure out what's causing this? I don't see that error at all in the past 4 weeks of logs in production.

Thanks Rick

Rick Steeves http://www.sinister.net

In reality nothing is more damaging to the adventurous spirit within a man than a secure future - Alexander Supertramp