Comment 5 for bug 580719

I am experiencing this problem too on my IBM Thinkpad X41 Tablet running Ubuntu 11.04. Maybe once or twice a day the cursor will begin flickering and skipping between the corner of the screen and the stylus issuing seemingly random button events.
The error messages in the Xorg log are exactly the same as reported by David Perkinson.

The only thing that really seems to take care of the problem (temporarily) is to suspend and resume the computer.

bjarke@tabix:~$ uname -a
Linux tabix 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:50 UTC 2011 i686 i686 i386 GNU/Linux

bjarke@tabix:~$ xinput --list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ TPPS/2 IBM TrackPoint id=10 [slave pointer (2)]
⎜ ↳ Serial Wacom Tablet stylus id=13 [slave pointer (2)]
⎜ ↳ Serial Wacom Tablet eraser id=12 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
    ↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
    ↳ Power Button id=6 [slave keyboard (3)]
    ↳ Video Bus id=7 [slave keyboard (3)]
    ↳ Sleep Button id=8 [slave keyboard (3)]
    ↳ AT Translated Set 2 keyboard id=9 [slave keyboard (3)]
    ↳ ThinkPad Extra Buttons id=11 [slave keyboard (3)]