hello fellow BBers, i just got the 8800 and it was good in canada on rogers. i'm currently working L.A right now and every few days the berry would lose signal with an indicator SOS only or sim card rejected. but if i wipe the berry clean start over, it will work once more. can someone please help me. Rogers is not very helpful on this matter. oh and my colleage's berry is the same situation. what's the problem???

thanks