So I exchanged my first iPhone 3G for another one at the Apple Store today because of battery (today, with 3G, WiFi, and Push off, and Fetch for 15 minutes on, I was only able to get about 5 hours of iPod-based music playback before the phone died). I noticed that when Auto-Brightness is set on the 3G, its brightness level seems to move *upwards* (i.e. it hovers towards the higher end of the spectrum) whereas my 2G tends to turn brightness down. This occurs no matter where I set the manual slider (which, I'm learning, sets a rough "middle-ground" about which Auto-Brightness functions...i.e., if I set the slider at 50% and then turn on Auto-Brightness, it will range anywhere from ~40-60% brightness). Does anyone else notice that their 3G's Auto-Brightness tends to hover on the higher side? Or have I lost my mind? (and I'm loving my 3G).