you need to find out which one.. and uninstall it!
good apps in the background.. are sleeping and use NOTHING! android will delete if it needs the space.
Two very small problems with that whole thing.
1.) Apps like amazon mp3, block buster, qik, and kindle even when you never use them run in the back ground. They can gather marketing information, like websites visited, contact information, and gps. They then can actively send it back to amazon. It is installed by default and killing it with the built in task killer will not stop it from rerunning. ATK will kill it every hour. But if you don't kill it, it is collecting marking and advertisement information from you and giving it to 3rd parties. Having them run in the background caused my 24 battery life to go to 4 hours.
2.) You have to void your warrenty to op out of this data collection. Because the only way to stop the appication is to root your phone. If you have rooted your phone then the build in app killer is kind of pointless, because android is really good an resources.
Which leaves most people in a bind, they want to stop the programs that are misbehaving but can not root their phone.
I only kill the above mentioned apps using atk. My battery can usually make it 18-20 hours. If I remove ATK, my battery will not make 4 hours.
Please explain how, if I only kill those selected app, does my battery life increase soo much? And please explain to me how I can not void my warranty and yet kill these apps?
For people that have rooted their phones, your advice is good and solid for those that can, ie have a business phone that prevents you from rooting. You need to use something to aggressive to stop those apps.