Few days ago when i upgraded my office PC from Fedora 8 to Fedora 10, on reboot GUI got stuck, and i was unable to login through GUI, while was able to login through Command Line. Sucks... !
Anyhow with little googling and reading Xorg logs i am able to fix it, here are my findings...
if you find any such thing reporting "intel_bufmgr_fake.c:387: Error waiting for fence: Device or resource busy."
1. # vi /etc/X11/xorg.conf
add following line in Section "Device"
2. # Xorg -configure