Well, it's been some 4 days since I flashed back to the December FW. I haven't had the battery drain on me at all. I'm now sure the supposed battery drain problem that was supposedly fixed in the April 2nd FW was not totally fixed.
I decided to go back and read about the battery drain problem and from what I could find in the forums, it seems the issue cropped up in firmware releases before the Dec '09 FW as well. In those firmwares, it seems the battery drained during lockscreen because some process was left running when the user locked the screen. I'm figuring some process is perhaps turned on and runs during the lockscreen in the April 2nd FW? That's the only explanation I can think of for the battery draining so quickly on me.
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