"We are sorry, but your Linux system has crashed. The Microsoft Code that enables this feature is fully activated, but has not been updated. Please log on to the Microsoft Update site to get a new version of this exact same code. Now you may reboot your computer and come back later to this screen."

In fact, it may, or may not, be useful; or it may be both useful and not-useful, or neither useful nor useless, or even a state between useful and un-useful. It may be useful to consider this further ... or maybe not.