Video card crashes suddenly

hallo,

I work on characterrigging with shape keys. The first model I completed went good and everything was fine.

As I did the second one(exact the same procedure as the first), while I was applying shape keys for facial animation, blender suddenly crashes everytime I rotate around the mesh!(shift+middlemousebutton)

this before happened only when I watched a video full screen besides working with blender.
But now just blender is running and it still hangs up!
Whats wrong?!?!?!?

My videocard: ATI Radeon HD 5700 Series

Please Help!!!

With my 5870 I got crashes when Firefox was open (also uses opengl to accelerate its view) - were you watching a tutorial video in Firefox? Or in VLC player (which may use opengl to hardware accelerate its view as well)?

Try appending your old objects/scene in a new Blender file, and see if that helps.

SOLVED!

Thanks Herbert123, I overlooked that my subsurf was still on (view 2) so that only one step down made a massiv change in performance :slight_smile:
Incredible… never thought that…

PS: watched Avatar(for the 200th time) on VLC :slight_smile: