Hey, Mr. James Pulver I've been working with KVM for a while on SL5.5 for mostly Windows guests. Recently I've needed to run XP SP3 guests for legacy applications. However, when I set one up it maxes out the CPUs allocated to it, even when the guest CPU use is 2% or idle. Googling has only shown that it should support ACPI, which I checked and does have ACPI shown under computer in Device Manager of the XP guest. Any ideas to get XP behaving as a guest with KVM? Yes, Set your guest system / XP vm in device manager to Standart PC and not as "" uni prossessor / or Multi prossessor "" only if u use 1 VPU/CPU on your host system if u use 2 or CPU added to VM you may not set it standart PC. -- --------------------------------------------- Need help on your Ubuntu or scientific linux install Go to www.open-webserver.tk www.scientificlinux.org --------------------------------------------