Corrupted textures and other problems
My first problem is texture corruption(1s.jpg & 2.jpg). It occurs pretty often in Danger from the Deep (latest CVS) and once happened in Compiz Fusion 0.6.0. Secondly, in Danger from the Deep (more often) and in Flightgear 1.0.0 (not very often) a lot of random polygons appear. I couldn't get very good picture of it, but 6.jpg somewhat demonstrates it.
In other OpenGL apps(Blender (latest svn), vdrift (latest svn), Jedi Academy) everything works normally. Core temperature was between 42 and 50 degrees all the time.