[F8] Ugh. Latest update prevents Gnome from coming up!

Tue Dec 11 19:21:10 UTC 2007

I clicked the Package Updates icon, updated the new updates, rebooted,
and my system comes up, however the X server shows the busy cursor
spinning forever but Gnome does not bring up the login page!

I can access Ctrl-Shift-F1 and log in.

What can I do at this point to restore whatever broke?

Help!!

No virus found in this outgoing message.
Checked by AVG Free Edition. 
Version: 7.5.503 / Virus Database: 269.17.0/1180 - Release Date: 12/10/2007 2:51 PM