[CentOS-virt] Machine freeze

Hi all,

we are running CentOS 5.2 Xen virtualization system with the latest CentOS packages with couple of VMs on DELL PowerEdge. "Sometimes" the whole machine freezes without anything in log files, anything on the console. "Sometimes" really means we cannot define why or when. Sometimes the machine was idle with just one VM, sometimes quite busy with couple of VMs.

 Has anybody had the same experience? If yes, any hints on how to resolve it or how to trace the cause?

 

Thanks.