On Tue, Oct 4, 2011 at 1:18 PM, <m.roth at 5-cent.us> wrote: > Negative wrote: > > On Tue, Oct 4, 2011 at 10:41 AM, <m.roth at 5-cent.us> wrote: > >> Brian Mathis wrote: > >> > On Mon, Oct 3, 2011 at 10:16 PM, Negative <negativebinomial at gmail.com > > > >> > wrote: > >>>> I built guest vm's one for Windows 7 and one for Windows XP using the > >>>> virtual machine manager on a Â just updated to centos 5.7, and they > >>>> are both crashing the host machine. They run only Â for a few minutes, > <snip> > >> > Is this new hardware? Have you run any hardware burn testing (CPU, > >> > RAM, etc...) and/or memtest86+ on the RAM? This sounds like a > >> > hardware issue to me. > > > > It's about three years old. I had one hardware issue a year ago in which > a > > video card fried, but it's been great. I will run memtest this afternoon. > > > >> I agree with Brian - it may be coincidental that you built the VMs, and > >> then it started crashing. > <snip> > > -- and that would've been my fault. Then, every time X is running the > > guest and host crash. > >> > >> One other question: is selinux enabled? > > > > Yes. No warnings, though. > > More and more it sounds like a hardware issue. Hmm, every time X is > running, and you say you had one video card fried - how did it fry? Also, > is this machine on a good quality surge protector? Have you had a > thunderstorm, or power outages recently? > > mark > The vendor told me that the particular video card model (I forget which) had some flaw. In any case the fan stopped running, and it heated up. I usually use the machine remotely but I was at the console at that moment. The monitor started flickering and then went gray. The vendor sent a replacement, but I had thrown an old ATI in before it arrived. When the crashes occurred now, I finally put in the replacement. Same behavior. The surge protector is good. I live in NYC and the biggest environmental hazard is the cleaning lady, who has in the past tripped the surge protector switch. I fear you're right about the hardware. But as far as I can tell everything else works fine. I went overboard in buying two quad processors -- so I could live with one if that's the problem.