Login loop problem

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http://askubuntu.com – I have looked all over at a lot of different threads regarding this problem and nothing has worked, so I'm hoping I can get some help by maybe providing some info specific to my setup. I'm running Ubuntu 11.10 64-bit with an NVidia Quadro 1000M card. My installation was working just fine today until I changed something with xorg.conf and then I wasn't able to boot into ubuntu because it would get stuck at the splash screen. I made it into tty and was able to log in and start Xorg manually via startx. Then I rebooted and now I'm looping in the login screen. I've tried regenerating xorg.conf us (HowTos)