While running Parallels 4 (an Ubuntu 8.04 VM) I decided to uninstall VMWare Fusion (using the uninstaller in /Library/Application Support/VMWare Fusion). This seemed to do something bad to my running Parallels VM -- it seemed to freeze and not respond to keyboard or mouse clicks.
Moral of the story: probably not a good idea to uninstall Fusion while running Parallels?
Moral of the story: probably not a good idea to uninstall Fusion while running Parallels?