Thank you for that. I've looked at the patch in question (503_fix_masked_transformed_valuators), and it looks plausible that there's a change in behaviour, although I don't see why it would only manifest after a few minutes' uptime.
It appears that we should revert that patch pending further investigation. ** Changed in: xorg-server (Ubuntu Natty) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/791596 Title: Odd Pointer Behavior After Recent Xserver SRU in Natty -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs