I left a rig of 6 video cards running poclbm on ubuntu 11.04 overnight and everything went fine...
I left the same rig running all day today and found that my mouse was "jittering" in the lower right side of the desktop, the desktop was still visible, presumably active... but my mouse was frozen to a section of the screen and the miner terminals seem to have stopped working (not updating anymore).
Any solutions for this?
Does anybody even know what's causing it?
Could it be their temperatures? Some cards are approaching 80-85 celcius when mining... perhaps just heat adding up near the rig over time?
The mouse moving around by itself shouldn't freak X out. Are you running Ubuntu 11.04? I saw something about turning off multiple desktops or if the mouse hits the edge of the screen it will flip desktops and impact mining. If it's a usb mouse, just unplug it and see if that makes any difference.
It's more likely heat, power, or the fglrx driver freaking out.