buffer underrun errors?

[jimbox114]

Lately I have been getting alot of Buffer Underrun errors from zone.exe. And the problem is when I get these it locks up the whole server so that nobody can get in. They are easy enough to fix, just have to click the zone and let it reboot. However I obviously can't sit 24/7 in front of the PC and close that window every time this happens.

Does anybody know what might be causeing this? I can understand this happening if I am actually using the PC, but anymore it happens when my pc is not being used. I don't have any screen savers, and all my power settings are set to never shut down. I do not have any 3rd party programs running (other then winmysql obviously). I only keep 8 zones open at a time right now. I got a 1.7 gigahertz processor and 768megs of ram on this pc, surely 8 zones isn't too much? At one point I was running 11 zones without problems, however after getting these errrors I have went down to useing 8 zones instead. The only error I get is a window that says I had a buffer underrun error and that it needs to be shut down.