Re-boot "hot key"

[Mark C. Miller]

I'm a noob.

Is there a comparable key combination in Ubuntu for Window's control-alt-
delete? 

I recently upgraded a computer to Ubuntu 8.10.  After entering my userid 
and password, the system just stopped working.  I wanted to reboot, but 
the upper panel was not yet visible, so I didn't have access to the drop-
down menu with that option.  I ended up just unplugging the computer; 
doesn't strike me as the ideal way of doing things.

Thanks.

mcm

-- 
Mark C. Miller