Wow, this is a story worth watching. Reports are coming in from all over, that the 30GB Zunes are freezing up during bootup:
We’re getting tons of reports—tons—about failing Zune 30s. Apparently, the players began freezing at about midnight last night, becoming totally unresponsive and practically useless. The crisis has been dubbed by Zune users ‘Z2K9’, due to the apparently synchronized faceplantings across the country.