I just did a fresh install of FC6 but when I try to login instead of the desktop I get a login prompt. When I attempt to fire up the GUI via startx I get an error message:

"fatal server error
server is already active for display 0
if this server is no longer running, remove /tmp/.X0-lock and start again."

There is more but I think there is enuff info, if not let me know,
My xorg shows only one error: "AIGLX screen 0 is not DRI capable".
I have an old ATI vid card.

I am able to log in to the GUI if I remove the .X0-lock.
I have updated everything via yum.

xorg file:
# Xorg configuration created by pyxf86config

Section "ServerLayout"
Identifier "Default Layout"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "ati"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

thxs

dr

error message speaks for itself surely... "if this server is no longer running, remove /tmp/.X0-lock and start again."

Somehow it resolved itself. Im good to go