When I put that thing in my pocket it heats up so bad that if I don't pull it out, it jumps to 116 degrees. And overall, I don't use it that much in a day. I use my 3Gs most of the day.
The last 2 hours on the battery I turned off the data while I was in a meeting with a prospective client and the battery only dropped 3 percent during the whole meeting.
Actually, in the first 2 weeks I had the phone, the battery life was awesome. Then out of no where, it went downhill fast. I don't know why either. And maybe it's just my area.