Comment 7 for bug 556897

I can also confirm that this bug also affects my Ubuntu installation, and it happens in both 9.10 (Karmic) and 10.04 (Lucid). I was running a Karmic installation until earlier in the week, and had been for nearly a year, but this issue started to appear in the last week. At around the same point as the problem started to occur, update manager started failing with an "unable to grab the mouse" error message when I attempted to update (I think there may be other bug reports regarding this issue - I don't know for sure that it's related).

With one application window open, things seem to be fine, but as soon as a second application window opens (within the same or another application), I'm not able to grab window / button focus, or move/resize windows with the mouse.

As with the issue Tamas reports above, if I switch the state of assistive technologies from on->off or off->on (depending on the current state), and then "close and log out", the problem goes away when I re-logon to Gnome.

Performed an upgrade to Lucid, but the problem is still occurring when I first boot up the system.

I'm using a Logitech wireless USB mouse on this machine at the moment.