Haha, alright, for those of you who own a 30 gig Zune, don't turn it on. Apparently as of last night at midnight, they go to the boot screen, the progress bar reaches the end, and the Zune freezes.
Considering the timing, it wouldn't surprise me if it's because this's a leap year and the extra day caused it to commit suicide. MS has apparently acknowledged the problem (hard to ignore too many thousands of posts with a single problem - unless you're Creative and have launched the XFi line...). No fix for now.
Those of you who have a Zune and have had it freeze before know that all you can do is wait for the battery to run down (unless you want to take off the back, risking damage.) So, I'd recommend that you simply not turn it on. I didn't get this warning.
With all of the nice things that I say about Microsoft, some of you may wonder why I have a Zune. The reason is purely pragmatic: MS gave me one for free. :P