paulmike3 - has your lowest power draw been about 250mA? What are the top CPU using apps on your system?
After installing SystemPanel (thanks nate44) the top 5 CPU using apps over the last two hours (going from 99% battery to 33% during those two hours) are:
1. System Process (9m 20s)
2. System (1m 43s)
3. SystemPanel (52s)
4. CurrentWidget (27s)
5. HTC Sense (25s)
I think I can safely say it is the System, which sounds like the same problem you are having. So far today I have fully drained the battery 3 times with only minor use of the phone.
I have two different problems, each occurring randomly, usually the same day as each other, and usually one after the other (and sometimes one, the other, back to one, then back). Ugh.
The first is the CPU going to 100% (see below).
The second is the idle current running at 250+mA.
In troubleshooting the CPU, I also installed OSMonitor. When I have the problem, "Android System" is using almost all of the CPU (95+%). The process listed under Android System is "system_server". Google has some hits about system_server hitting the CPU hard, but I can't find anything or anyone that can help. :\
Oddly, when the CPU is pegged, it's only pegged when not idle. The CPU and current go to normal levels when idle. However, when the current issue happens, it's on top of normal when idle and in use (ie., when not idle, it's +250mA -- ~700-900mA).
Hopefully the update will rollout soon and fix this problem. It's extremely frustrating when it happens.