I'm running Parallels Build 2092 (v2.2) on Windows Server 2003 SP1 and a HP ProLiant server. I'm hosting 2 Windows 2003 servers. I'm experincing very hard "lock ups" or crashes on the host OS. The kind that just make the screen go black, the mouse won't move, and nothing responds not even a memory dump is made. It's as if I pulled the power plug. I thought it might be hardware so I subjected both of my host servers (I have two with the same config.) to a burn-in stress test program for many hours with no problem. Sometimes I can bring things back but last time it corrupted the virtual hard drive images really bad. Anyone else having this issue? Would another Host OS work better? I really liked parallels when using it on my workstation but now since moving this into our development test servers it's proving less stable then originally thought. Any help would be appreciated...