Comment 5 for bug 362359

Also experiencing this issue after an upgrade to jaunty. Here's some info (when the bug occurs):

Tried my old dist-upgrade xorg.conf with no sucess.
Xorg.0.conf, messages, dmesg, syslog, debug show no errors when this occurs.
Issue occurs with compiz enabled also, regardless of what modules are en/disabled.
Shortcut keys such as ctrl+space to bring up window menu do not work, which leads to me to believe it might be a window manager bug.
Alt+tab has no effect
Ctrl+alt+left arrow sometimes works (to switch workspace)
Only solution I have found is to drop to shell via ctrl+f1 and restart GDM
Using nvidia drivers as well
Mouse pointer moves, however it's internal position does not - possibly also a bug with positon polling?
Ctrl+alt+d to minimize all windows works, at which point the mouse positon (not pointer graphic itself) becomes locked in place (over the AWN dock in my case). Subsequent clicks are done in the context of that position, regardless of the location of hte pointer graphic
Prior to the distribution upgrade from intrepid, no such issues occured (which had proposed update sources enabled as well. Backports NOT enabled)
When the focus becomes locked to a window (i.e. not the entire window, just the window handle of hte respective element - e.g. the text area of aterminal, or display area of a firefox tab, or icon in the panel, and location text area (nautilus location bar, firefox address bar etc), scrolling does not work via any of the possible methods at that time (e.g. page down, mouse wheel, arrow keys etc...)
Hot-keys relevent to the focus stealing 'window' (again, such as an the actual display area of a FF tab, not the top bars etc) still function (e.g. backspace, ctrl+w)
After reading another similar bug which suggested HAL was no longer running, I check to see that HAL was in fact still running. A restart of HAL had no effect either
Keyboard and mouse are both USB
Switching the USB ports being used had no effect
Ctrl+alt+backspace to restart the xserver does not respond

I'm unsure if it's of use/interest, but the compiz cube plugin had a similar bug some months back, where an incomplete rotation screwed up input focus. However, even with compiz disabled, the bug still occurs (as mentioned by the original bug reporter). Also, the bug occurs without any prior workspace switches.