Yep, so I'm guessing it has something to do with the kernel or the intel videodrivers (as the problem did not occur when I put i915.modeset=0 in grubs kernelline). As you didn't get a fix with your 2.6.35.7 it might be the intel videodriver that is causing our trouble. Maybe you can try the very latest intel driver available for Ubuntu?
Yep, so I'm guessing it has something to do with the kernel or the intel videodrivers (as the problem did not occur when I put i915.modeset=0 in grubs kernelline). As you didn't get a fix with your 2.6.35.7 it might be the intel videodriver that is causing our trouble. Maybe you can try the very latest intel driver available for Ubuntu?