> I've got about a dozen machines which are running the -164 kernel in the 
> dom0 with about 20 VM's running various kernels under there for i386 and 
> x86_64 with no problems.
> 
> your problem is most likely caused due to issues in the non CentOS 
> components.
Thanks for the response.
Where did you get the hypervisor from and what version are you running?
Thx again.