I have Fedora6 with VIA chipset onboard video and Gnome.  Many of the installed  applications will freeze the display screen, and mouse.  When this happens is there a Gnome keyboard shortcut that will give me access to a shell prompt, so that I can kill the offending process, or restart X windows.  Right now, my only option is to turn the power off.  
<br clear="all"><br>-- <br>Best Regards,<br>-Larry<br>&quot;Work, work, work...there is no satisfactory alternative.&quot;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;--- E.Taft Benson