I installed 13.04 as a virtual machine using VirtualBox from Oracle. When it was done doing the install, it says that it needs a reboot. After the reboot, I got this message:
Sorry Ubuntu 13.04 has experienced an internal error /usr/bin/compiz
I'm not sure what it means and how to resolve it.
Best Answer
It just means there's been a problem with compiz, which is the window manager on Ubuntu. If you don't experience any problems, then it has corrected itself. However, you can file bugs if you want to tell developers what happened so that they can fix it.
If your desktop is working properly, you don't have to worry about it. But you'll probably want to install Virtual Box Guest Additions, which will provide drivers for your graphics and other things.