When I'm not using the galay tab2 10.1 tablet and have it tirned off i'm getting an alarm which I think is telling me that I have an e-mail message. I looked at the task manager and nothing is running. how do I turn off to the e-mail (I think its the email) to reserve battery power. if I go to setup and click on manage apps, then click on the tab called active it tells me thst there are many programs still active but non of them are apps that I use. Is it safe to stop these background programs (apps) or should I leave them running. They are things such as the Samsung keyboard that show they are running in the background. Advice wanted please as I am new to the Samsung galaxy tab 2.