Bryce, nicely bisected! However, with a fully up to date including mesa 7.9~git20100909-ubuntu2 I still see the problem on Intel N10 if I remove the CLUTTER_VBLANK=none from /etc/X11/Xsession.d/80clutter_vblank_none (the workaround).
Bryce, nicely bisected! However, with a fully up to date including mesa 7.9~git20100909 -ubuntu2 I still see the problem on Intel N10 if I remove the CLUTTER_VBLANK=none from /etc/X11/ Xsession. d/80clutter_ vblank_ none (the workaround).