The past week or 2 I had been seeing serious battery drain on my iPhone3G. At first I thought it was my imagination, or due to over usage of Apps or something. During this period I noted that I would hear the ding and buzz of new email pushing in more than I used to. For some reason after a recent restore, the way I set up my verizon/yahoo email became push (it wasn't like this before on my original iPhone). I didn't think much of it, until one night after charging nearly to full, the next morning the battery had drained to half! I found this disturbing so I shut off both wifi and push, and now things seem back to normal (at least more similar to the old unit). Didn't lose much at all over night, or even through the whole day today. Of course I also upgraded to 2.0.2 last night, but I doubt that was a factor.