unwanted screen blanking

[Paul Greene <pauljgreene comcast net>]

I just installed 7.3 on an IBM T21 Thinkpad. All went well except for one 
little gotcha.

The screen goes blank every 5 minutes. Moving the mouse doesn't bring the 
screen bank; only pressing a key on the keyboard brings the screen back.

I've been digging through all the menus in Gnome trying to find either a 
screensaver parameter somewhere (there is a screensaver set, but it's set 
for 20 minutes, not 5), and trying to find something possibly related to 
laptop utilities.

I'm sure it's something simple, but I just can't figure it out.

Anyone have a suggestion?

PG