Debian Wheezy - GNOME launches in Fallback, 3D acceleration?
 

Distro: Debian Wheezy
Kernel: 3.1.0-1-amd64
Graphics Card: ATI HD4890

So this morning I installed Debian Wheezy.
After logging in, I got a message saying it had launched in fallback mode due to drivers not supporting something or other, I am sorry but I didn't pay much attention to this as I thought installing the graphics drivers would fix it. So I installed the ATI catalyst driver 11-12 and rebooted, however this changed nothing.

I believe I am having a similar problem to the OP of this thread:
http://www.linuxquestions.org/questi...ration-894505/
However when I installed the firmware-linux-nonfree package and rebooted, nothing changed still.
Is there a set up step i have to do with this package after installing it through aptitude?

First time post, my apologies if I have missed vital information.

Have you launchedand rebooted after the install?