I just installed Ubuntu 12.04 on my Gigabyte P35K. Unity was working fine at the first boot, but then I installed the Nvidia driver and now when I move a window it is pretty slow, when I take the window to one border it does not resize, etc... I know that it is not a problem from the unity configuration because I broke my last install trying to fix this problem...
Is there a problem with the latest nvidia driver? I installed it using
sudo apt-get install nvidia-current.
Thank you in advance for your answers.