That's interesting... it does that to me, also it does it when I
Alt-F2 and begin typing.
This problem is nonexistent with KDE, which I use most of the time
anyway. I've got a P4/Centrino 1.6gHz with an ATI Radeon Mobility
I believe that particular case is because of the autocomplete code,
which for some reason is extremely slow, at least for the first time
it's used in a session.