Following a recent upgrade, Xorg was apparently also updated to version xorg-x11-server-Xorg-1.6.1.901-1.fc11.i586 which unfortunately didn’t play nicely with version xorg-x11-drv-ati-6.12.2-14.fc11.i586 .  After a brief investigation, the combination resulted in this error:
 /usr/lib/xorg/modules/drivers//radeon_drv.so: undefined symbol: DRIOpenDRMMaster
Ultimately, this had the following effect:

No GUI (System never got as far as showing any graphics let alone KDE, Gnome etc)
No Keyboard [...]

Having a dual boot system, I find that when setting one OS time correctly will corrupt the other OS’s time. This has been going on for a while on my system despite numerous attempts to set the time properly. I suspect this has to do with BIOS settings but couldn’t pin point the correct [...]