[CentOS] Any known problems with kernel-2.6.18-164.el5.x86_64 / x86_64 / 3ware?

> I have a server that is running centos 5.3 x86_64 that until last week was
> running fine.   With no error messages in console and in /var/log/messages
> the server simply stops responding.

I posted the following bug to RedHat yesterday for similar symptoms
with RHEL 5.4, same kernel.
https://bugzilla.redhat.com/show_bug.cgi?id=525898

I happen to have a 3ware raid card, but didn't think of it as a
culprit.  Were you seeing any soft lockup messages with kswapd0 in
/var/log/messages?