I am having similar issues as well. Battery life was so bad I went out and bought the big extended battery - still sucks.
1 15 minute call, I Heart Radio running at low volume with headphones for 1.5 hours now, I place the screen off when not checking e-mail, and I am at 60% after 3.5 hours. This with the 2150 mAh battery.
The Systems page says usage is 35% for Android System, 22% for Cell Standby, 16% for Phone Idle, with the remaining 27% split across Display, Voice Calls, Mediaserver and Dialer
I removed Advanced Task Killer and JuiceDefender last night to let FroYo do its' thing with battery management that some of the guru's say it should do on its' own, and I am not impressed.
This battery issue is ridiculous and makes the phone unacceptable for travel use if you don't have access to power. I am leaning towards putting JuiceDefender back on since battery life seemed to be better yesterday - but this runs counter to what Google and the guru's say.
What gives?
Also, anyone else noticed a wonky lag or hesitation with the browser after FroYo?