>> - Fresh install of CentOS 5.5 64bit all patches up to date
>> - Kernel 2.6.18-194.3.1.el5.centos.plus
> First thing that comes to mind is the fact that 2.6.18 is about 3 years old.
> I'm not familiar with CentOS patching policies, but even if you've received
> and applied some XFS patches, they'd still probably be rather old.
> If CentOS 5.5 doesn't have a much newer kernel package available, say 2.6.30
> or later, if I were you, I'd grab the kernel source from kernel.org and roll
> your own 220.127.116.11 or 18.104.22.168.
Currently that is the latest and greatest kernel available on CentOS. So we may need to investigate rolling our own kernel if there are no configuration changes that we can make to resolve the problem.