Comment 6 for bug 334533

This, combined with the removal of a countdown in the shutdown confirmation, makes it incredibly difficult to shut down or log out using the keyboard. If the user was blind, it would be impossible.

I think there was some confusion in triaging this bug. The overarching issue that was mentioned (gnome-panel needs to be thrown into the sea strapped to an anchor) is a big, long-term thing.

However, the specific issue this bug discusses, which is that the indicator applet isn't release input grabs properly, can be fixed here without impacting the surrounding system in any way.
(It is also a very serious problem in itself and needs to be looked, for Lucid, if ubuntu.com is to continue promoting accessibility).