I have a D2 running 2.2, and just installed Titanium Backup to help with prolonging my battery life. Basically, what are the normal apps that I should delete so that they aren't using up resources (e.g. Skype?)? I want to PROLONG my battery as much as possible without losing any functionality. Other general questions for the knowledgeable since I've only had my D2 for 2 days and am new to all of this: 1. I used z4Root... should I ever be scared of not being able to unroot my phone due to this program being altered? The option is currently there, but I want to know that if something happens, I can pretend like my phone was never rooted. 2. Taskillers: general feeling on these forums is that they are bad, correct? Thanks to everyone who helps. Glad there is such a great community out there for this stuff. Sorry if my questions were too elementary.