I had an iPhone 3g and I just bought the Captivate. I am having issues with it freezing and general hanging in apps occasionally. I need to force the close of apps too often. I rooted the phone but don't think that should have caused these issues. Is there a way to reinstall the os? Not just resetting the defaults but reinstalling the software. I am thinking if I reload the os I might be able to resolve some of these issues. Does anyone have an option or information on how to do this?