Comment 152 for bug 636311

Lucid:

After the kernel update to 2.6.32-29.58 a mythbuntu/xubuntu system with a Logitech Cordless keyboard and mouse began exhibiting the behaviour described in this and related duplicate bugs - namely:

 * loss of left-mouse functionality
 * xubuntu's graphical sudo GUI reporting "Other application has captured mouse, may be malicious key-logger" when using update-manager

Triggers appeared to be:

 * pressing function key combinations or special media keys on the keyboard
 * some random time passing after log-in without doing anything except moving/clicking the mouse

After finding this and duplicate bugs and reading the various solutions and suggested causes I decided to try restarting the affected PC with the previous kernel, 2.6.32-28.55, and the problem disappeared.

I can't see anything obvious in the changelog to explain what may have introduced the problem on the particular system.