I'm not too pleased with the battery performance on my Droid. I just checked on what's using my battery the most, and I see the following: Voice Calls - 44% - The last time I was on a voice call was 1 hour ago. How do I end this? I do have the Advanced Task Killer app on my phone, but it doesn't show that anything voice-related is running. Display - 17% - No brainer here Phone Idle - 13% - What does this mean?? Cell Standby - 11% - What does this mean?? I know I can reboot my phone, which will reset everything, but I appreciate if anyone can provide clarification on the above items.