I have spurios hangs of one of my systems, running 9.1, stock + YOU updates. When the system hangs, it hangs dead hard and a reset-button reboot is the only way out. The system itself resides on a Compaq disk array, and there's an IDE disk that's used for storing VM-data for VMware GSX. Often the system hangs when I'm having system load on the VMware virtual machines, so I guess it's related to the IDE disk. I see in my /var/log/messages lots of these: Feb 14 11:18:18 ragata kernel: hda: drive_cmd: status=0x51 { DriveReady SeekComplete Error } Feb 14 11:18:18 ragata kernel: hda: drive_cmd: error=0x04 { DriveStatusError } Feb 14 11:18:18 ragata kernel: ide: failed opcode was: 0xef The IDE disk is a Western Digital WD1000BB-50CCB0, system chipset is VIA KT600. Ideas please? Anders.