Screen Goes Black

[Brandon Petersen <fedora gxconcepts com>]

I've installed Fedora Core 2 Test 2 onto a Dell Dimension 2100 (800Mhz
Intel, 196mb Ram).  I've been testing things out, submitting bug
reports.  But there is one thing I can't seem to figure out and submit a
bug.

Sometimes the screen goes black, and I cannot regain control of it. 
Ctrl-Backspace doesn't exit out of X, Ctrl-Alt-# doesn't bring me to a
terminal.  It seems to happen randomly, could  possibly be from no
activity, but I'm not sure.

I can ssh into the box, but I'm not sure if there is anything I can do
to determine what is going on with the X Server from an ssh session?  

Any suggestions on determining what is causing the lockout and blackout
screen from ssh?  

Thanks

Brandon Petersen