Preferences/Power/Beam Receive/Off. I am doing the same, at least until the new batteries are out...
This is what finally did it for me.
I did the camera update and updated the phone from 1.04 to 1.12 and the battery life didn't improve at all
Yesterday I started reading this thread from the beginning and realized I hadn't turned off Beam Receive.
In the past I would get about 12 hours of battery life (most of that time on standby and only one or two short calls), last night I had the phone on for about 18 hours and the battery was at 68%.
