i have def, had this problem in chicago. i noticed the exact same symptoms being noted here. i thought it was just my 650, as I have grown to really hate it lately. I've had dropped calls like crazy, network 3000 errors (at least 2-3 day), and tons of calls going straight to VM. What can we do besides complain? Sprint seems to be slipping a bit. I can't wait for the motorola Q to come out!!