How do i fix this?

[Prodigy™]

[FL3r]

its dannys fault for sure

[TheMascot]

I've had that quite often aswell.

I usually try a restart of the computer. If that doesn't work, check your gfx card driver ( actually go to the cards website not letting it update from windows update ), and finally check windows updates.

After I've done those 3 things I can stay ingame all day without getting that message.

[AP0N]

just had this error (happens rarely)

u got vista? i tend to force quit that dwm.exe file that lets u see a mini picture of alt tabbed things. See if that helps (doubt it might)