Huy, I'm havin' the same problum.
Huy, me too.
Und Mee!
Well, I am equally frusterated, but I would appreciate it if anyone actually knew of any fixes.
Same thing here .. I've had the Zune 30 since it came out last year and never had any battery issue until the new firmware udpate. Wi-fi is specifically turned off so it's not that. I've been able to have a fully-charged Zune last me multiple weeks with seldom use on a single charge. Now this thing dies overnight without even using it. This has to be a firmware problem and I hope MS gets it fixed quickly.
Tim
Tampa, FL
Yes, I'm believing that this is a firmware issue as well with all these people having the same problem. I have an 80g and I am getting the same as you all. I would charge it to full, and not even play anything on it - and it'll be dead by the end of the day. I hope someone addresses this soon because I am often left now not knowing whether or not the Zune will have power when I get ready for the commute home from work.
I too think that it's not going into "low power standby" mode.
It has to be the new update causing the problems cause I used to be able to get hours out of my Zune 30gb before the update even with wireless on, now I can hardly get 20 minutes with wireless off. If anyone finds out any information on this problem please give me a notice. I will check in with the Zune Support and see if they are working on anything.
Free mp3s and Podcasts @ ZuneTracks.net 2009 Microsoft Zune MVP