Killing a process when desktop hang

[Haines Brown]

I just installed ubuntu 6.06 for the first time, and when I zoomed the
map to set the time in Evolution mail configuration, my entire desktop
hung. The mouse cursor moves, but nothing responds to a click.

What I would normally do is use a keybinding to bring up an xterm from
the keyboard, run $ ps aux, and then kill the hung process. What
keybinding by default opens a terminal in ubuntu so that I might do
that?

I don't recall every encountering an entire hung desktop, but if I
did, I could kill the X server from the keyboard. Not sure in ubuntu how
to do that.

-- 
 
       Haines Brown
         KB1GRM
         ET1(SS) U.S.S. Irex 482