haha i found that exact thing b4 i posted my last comment, but it kept asking for my debian cd which is on a usb and i couldnt figure out how to mount it so i just felt tired of it and went on with something else then remembered how to mount usb so i did when it asked but wasnt working and i had leave off to college and when i got back i checked my email to find this and i thought wow how about 1st mount usb then follow directions in link. for any body else looking for the solution:

mount /dev/sdc /media/cdrom *sdc may differ **if your iso is on a usb
then go to link above and follow directions.

lol not as simple as auto with Xubuntu 11 but at least debian 7 is support and is still simple install.
Thanks to all who replied!

Just comment out the cdrom entry in your sources.list

The real problem is caused by nouveau that unfortunatly is buggy with all nv10 cards and makes them unusable with free drivers, and as already said proprietary drivers are working only up to xorg 1.12:

https://bugs.freedesktop.org/show_bug.cgi?id=51477

Maybe write your experience too in the bugzilla page and they'll fix the problem! After all in the main page they state that nv10 is working, buf in fact it's not!

Problem seems solved with the latest nouveau!

Using 14.04 or so it's possible to install new drivers with oibaf ppa.