Comment 82 for bug 296167

Nice work Thomas.
Peter, its not related to evdev as it also happens when evdev is not used (on my box).

The script doesn't reproduce the problem for me, but then again, after switching from kde4 to xfce4 a few weeks ago the problem has disappeared.

Maybe the slow nvidia performance on kde4 makes it worse. Missing events or something along those lines. After switching to xfce4 I'm running the same xorg, kmail and other software as before, but things are snappy and fast, and the problem no longer appears.