[aaronmdjones]

When I went to university 17 years ago, all of the computers (except the Macs) had dual-boot Windows 7 and Ubuntu 9.04.

I'll give you five guesses which OS I never booted into.

[ConceptJunkie]

That's a bit of a trick question, because if you'd booted into Windows, it would have eventually broken the dual-boot.