for the past 2 weeks, if anyone calls me, my phone vibrates twice and then sends them directly to voicemail. this happens on both UMA and EDGE. I'm using T-Mo's 4.5.0.81, and used the CrackMem program to brick the phone and reload the OS. I don't think that this is a setting problem. does anyone think that there's something T-Mo can do? or is my BB physically malfunctioning?