Could be a transient, it also could be tower related. I was having trouble with this myself (with the stock ROM) a while ago, I seem to remember reading somewhere that it was related to switching back and forth between EVDO and 1x. Is it a problem only in one location? Or does it happen everywhere you use your phone? Are you in a 1x or EVDO area? In my case the problem just seemed to solve itself after a while. You might try doing a PRL update and see if that helps..
jim
|