Battery life is horrible on my ipod touch (3rd gen) since updating to 4.3 and 4.3.1. same is true for my iphone 4.
since this is an ipod forum, i'll stick with the former...
i used to see 1 week+ of life out battery on my ipod touch...now that i have my ipad2, the ipod touch sees little use, yet in 3 days of no use (no location services or notifications on, ping disabled, and mail fetched only manually), i saw the battery life drop to 50% in only 3 days of just sitting there. prior to 4.3, such behavior would show a battery in the high 80% range.