Restoring the Xfce panels
One question that people looking for help with Xubuntu often have is some form of “my panels/taskbar/menu disappeared”. Unfortunately, this is something that happens quite frequently.
The good news is that this is fixed easily. All that’s required is to press Alt+F2 to bring forward the Run program window, and run the command xfce4-panel.
Not only is this a quick fix for the problem, it also makes for a quick blog post that might still help quite a few people 
Update: Xubuntu 9.04 will include Xfce 4.6 which should be able to automatically restore the panel in the event of a crash. Hooray 
Update to that: According to willerlite, the panels do not automatically re-appear. Hmm :S
