I have installed the armhf image from February onto my smartbook (unstable) and enabled the repo. HD video decoding appears to be working through totem, but whenever I try to run the 3d demos, the smartbook freezes and needs to be turned off at the power switch.

This happens for both es11ex and simple_draw, torusknot briefly flashes a screen up before exiting. I have used the xorg.conf posted by Konstantinos. Has anybody else experienced this?