Excerpts from Rich Megginson's message of Mon Sep 27 10:35:44 -0400 2010:
Does this happen in conjunction with the sasl_io error?
I don't see any sasl_io errors. In fact, that seems like the only
relevant log entry that shows up.
If not, how often does it happen?
It was happening fairly regularly yesterday, but it seems to have recovered
today. We’ll keep an eye on it.
Is it easily reproducible?
That's a very complicated bug, but it appears to have different character
Are you using a firewall (hardware or software)?
We turn off Fedora's built in Firewall.
Don't sweat too much about this one: it seems intermittent and
it involves an old version of dirsrv that we won't be using shortly.