[xawen]

It is only a 300 Watt ATX supply. It's below the specs on the box, but I disconnected the unused drives to save power after I started havin problems. Also I don't have these lockups when running the equivalent apps (Doom 3, SL) in Windows.

I'll borrow a bigger PSU from a friend a give that a try (may take a few days) and update the thread...or hook the 6600 up to a dedicated psu.

Even though I'm not seeing this in Windows, are these lockups something you would expect from a power shortage?

Thanks...