I can confirm that the repo's at http://xgl.compiz.info fixes this problem. I noticed an update i810 driver for X.org. I remeber reading somewhere that it was a driver issue. If this is the case, I suggest updating the dapper repo's with the version on compiz.net.
-- OpenGL viewport cut-off with 915gm graphics https://launchpad.net/bugs/43052 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs