Oooo... I got this sporadically with my comps. Could be due to
overloading of gpu(i kana one serious 1 with THIS comp FX5500, old
i know...) playing C&CTW Demo.
If you encounter it "normally" frequent, then it's ur driver's
fault. Then there's oso those given above...XD
Which format is ur gpu btw? Card or intergrated?