so i was trying to set up pdanet via blue tooth on a mac and i was struggling along when all of a sudden my blue tooth on my phone turned off. so i tried turning it back on and now it will only stay on for 5 seconds or so before turning its self off again. doesnt matter if i hit any bottons or not while its on for those 5 secs, it will shut its self off. any idea how to fix it? tried taking the battery out already.