Hi guys, I have updated both my ipod touches too 2.1 the other day,both batteries were fully charged. A few hours later the battiers were dead. Theres a post already about this issue http://discussions.apple.com/thread.jspa?threadID=1704094&tstart=15 seeming to plague other ipod touch users too. As an iphone user I am skeptical of updating my iphone because I do not want a battery issue with my iphone either. I thought I would let yall know about this issue.