Today I installed Ubuntu 13.04 by doing clean install but I could only see purple screen. Then I installed nvidia drivers using root, now I can see only background image and Unity is not loading. I think Compiz is not loading too since I have no window borders. How to fix this.
EDIT:
I ran nvidia-xconfig and got error: "Unable to write to directory /etc/x11". Also I ran unity --replace and got error: Can't launch openGl (something like that)
EDIT:
Downloaded image using torrent and then reinstalled Ubuntu, now it works, also during installation I checked option for downloading updated during installation.