I've been flashing gab and ics roms for months and then decided to revert back to stock and another froyo 2.2.1 rom. Both times, same problem, SD card keeps checking for errors, and Activity Manager repeatedly force closes. Is there something on my SD card it doesn't like or what?!? As soon as I remove the card it runs flawless, pop it in and it gets lethargic and keeps rebooting. Anyone can help.