today i upgraded from ubuntu 12.04 --> 12.10 --> 13.04 --> 13.10
After all that Upgrades, my Desktop is not shown to me. I only See the Background-Picture an The Mouse
I think it is a config file, but after purge and install xorg, ubuntu-desktop, unity, unity-2d the Problem is still there.

Maybe The reason is, that i installed the AMD Driver (in 12.04)

I hope you can help me