Fedora 7: Id "x" respawing too fast

[J Taylor]

Laptop is an Acer Aspire 5003WLMI, with the original graphics card.  The 
display adapter is "Sis M760GX".

>From /var/log/Xorg.0.log:
(--) PCI:*(1:0:0) Silicon Integrated Systems [Sis] 661/741/760 PCI/AGP or 
662/761Gx PCIE VGA Display Adapter