Q: Why did this occur at precisely 12:01 a.m. on December 31, 2008?
There is a bug in the internal clock driver causing the 30GB device to improperly handle the last day of a leap year.
What a riot. Well, your Zune will work tomorrow. In the meantime, check out i-Hacked.com's Zune Fix. They had the first working walk-through I saw.