My phone has been acting like a edited by moderator for the past couple days. Locking up completely (needing a battery pull) randomly not playing music (Filetype not supported even though it's music I play all the time). Sirius is acting crazy, navigation takes forever (1-2 minutes) to figure out driving directions. This all started a day or so after the 2.2 upgrade..... but I'm hoping it's something else. OK so the questions, what do I need to back up? Will all my apps be completely deleted? My music/pictures/etc will be deleted off the SD card?