[treaty]

Have the same issue... Just moved to the iPhone, running 2.0 unlocked on T-mo network. Like the OP (I think) I've got the "Total Internet" data plan, no T-zones proxy hack being used.

Good to know about the airplane mode toggle - seems like a faster fix but still anoying. Out of curiosity - do you have Wi-Fi enabled? It seems to me that my issue may have to do with switching back and forth from EDGE to Wi_Fi... if I keep Wi-Fi disabled the problem seems to happen less?... testing out that theory now.