It doesn't matter which desktop environment is used (unity, gnome, xfce), it's the video driver that's causing the problem. Sometimes it gets so bad, I couldn't do any work. So I switched back to 10.04. If it is the same for you, I'd suggest you switch back as well.
It doesn't matter which desktop environment is used (unity, gnome, xfce), it's the video driver that's causing the problem. Sometimes it gets so bad, I couldn't do any work. So I switched back to 10.04. If it is the same for you, I'd suggest you switch back as well.