Hmm. I was running my quad-GPU F@H rig just fine last night, I showed it to someone, and then this morning, when I went to move the mouse and wake it up, to shut it down, it wouldn't wake up.
I hope nothing's wrong with it. I hit RESET and it came back up, and all of the GPUs showed up, so that's good. I wonder if I had a power glitch last night, because although I have a beefy UPS, it might not be enough to keep the F@H rig up.
Edit: I started it up again late today, and it was running for a short while, and I left the room. A few hours later, I came back to it and for some reason the screen was on. (In that time, the display should have gone to sleep.) When I went to move the mouse, the mouse pointer was frozen. Aww, shoot. Looks like something's not right here.
Edit: I left it overnight sitting at the desktop, and it wasn't frozen when I went to wake it up this morning. I enabled Prime95/SoB and HFM.net and RivaTuner, basically everything BUT the GPU crunching, and I'm going to test if that freezes it up.
I wonder if the PSU is failing or worn out - it's only been about 2 years.
Edit: I don't think it's the PSU. When my other computer plugged into the VGA port on my monitor went into standby, all of the sudden I got a BSOD, nv4_disp. I freaked out, thinking that my new build had bluescreened, then scratched my head because it doesn't have an NV card in it. Then I realized that was my F@H box plugged into the DVI. So something is freaking out the video driver, or something. I didn't even have any of the GPUs crunching. Just the CPU, which is at stock, running Prime95/SoB. Oh, and RivaTuner running. I wonder if one of my cards is getting flaky.