First time to post here, so please forgive whatever mistakes I may make. About a month or so ago I got a Motorola Droid at the same time as my step father. He asked around a lot about what to with it, and one of the first responses he got was to use Advanced Task Killer. I went ahead and got it too, figuring it couldn't hurt. I've looked online a lot about the Droid since them, and it seems most people don't like Task Killers, saying the Droid can handle memory by it self. My biggest concern is the battery and being notified on time. With the task killer my phone is usually around 20-45% battery, going from the time I wake up until the time I go to bed without charging at all. I don't run a lot of apps, around 10 or 11 total downloaded from the market. About half are just useful (wheres my droid, droidlight, etc...) and the other half are entertaining stuff (paper toss, airhorn, 4 in a row, etc...). I don't use autokill, but whenever I put my phone back in my pocket always open Advanced Task Killer and kill every single app so nothing is running when I put it into sleep mode. Whenever I get a text or email though, it still seems to alert me on time and the app begins running itself, and about 30 seconds after going into sleep mode random apps such a Google Voice begin to to turn themselves on, some within a minute others taking over 2 hours to turn on. One of the apps I have downloaded is Pandora Radio. I understand that it is a huge battery waster, and even though I don't use it very often (maybe 1.5-2 hours a week) I'm afraid that if I run it, listen to a couple songs, hit the pause song button, go to my home, then put it into sleep mode it will keep using battery. What I'd like to know is, with any given app, if when I'm done with it will it stop using my battery, or should I continue to use Advanced Task Killer? (Yes, I searched the forums and most of the stuff I found lasted about 5 posts of everyone saying not to use, then some posts sayings its great, then a massive arguement. I'd just like to know if opening an app, then hitting home (after pausing the song in Pandora, or turning off the LED in droidlight, etc) will have any adverse effects on my battery.