I have had my Optimus S for about a month or so I guess. I have had it shut down once during the night, but power right back up without a battery pull. Other than that I have had no problems. Today the thing all the sudden started running suuuppper slow. I couldn't get into my gallery without waiting and waiting. Then when I exited an application it would freeze for a minute and then go back to the home screen where it was laggy on about everything I did. I did a battery pull and it's good to go now. What causes this, any apps that could be causing this? I've heard some people say they need to be rebooted, battery pulled here and there to help performance, is that true?