I'm afraid I haven't had the patience to let AH run that long after it's stopped responding, but I'm running Windows XP Home Edition SP2. I invariably wind up hitting the power button of my PC, as task manager won't open, I'm not able to switch windows, open the start menu, switch users etc... However, the mouse will move around (certain) areas of the screen, depending on how many times I press "ALT + TAB" - so I think it actually is switching windows, but isn't showing me anything.
At a guess, I'd say that this is graphics related. FYI I'm using an NVidia Geforce FX 5200, a Pentium 4, and I have 512MB of RAM.
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Yossarian