Does this exist?

[Hollowcell]

There is always the possibility to use something like XP-lite to create a minimal windoze, then install what you need and leave it at that. That's pretty much what I have done and it works well.

I am hoping that the main sequencer programs make Ubuntu compatible products soon though - been looking at the latest Ubuntu release recently and it's pretty damn good. Fair few people at the uni I work at (non-PC related) are making the switch and of course most of the people who are in PC related fields use it already.