"Mr. Ballmer, Since you live in a fantasy world, thought we'd pay some fantasy money for your fantasy claim."
I think Tristan Sloughter might be on to something.
If you haven't been following the whole Novell-Microsoft deal, Novell's customers basically get protection from being sued by Microsoft. Microsoft believes that the Linux kernel infringes intellectual property it owns (heard this before?), and that Linux users are liable.
That's right, Microsoft wants you to think it's going to sue you for using Linux. (It's yet to be shown if they actually have a case or not. Many Linux advocates believe they don't.)
In either case, I find it ironic that Novell, who takes a strong stance against proprietary drivers in their kernels, admits that it thinks there's "proprietary" intellectual property in heart of it's Linux distribution, SUSE. That doesn't make very much sense, does it?
Little associated with Microsoft seems to make sense these days...