I'm not sure if this is a Verizon data service issue, a hardware issue or a Chatter issue.

Over the last two weeks - I've been losing my data connection, my phone works fine. Sometimes this is expected (like when I enter certain areas of the hospital) and others are totally unexpected. When Chatter tries to reconnect - it can't. Shutting down and restarting Chatter does not fix this. I have to deactivate the phone and reactivate (ie - hold down the red phone button to shut the phone down and then restart it).

Has anyone else had this problem before? Any ideas what's going on?

It just started two weeks ago and its happening frequently now.

Details:
Verizon 650
Treo650-1.04-VZW
Chatter v2.2b7

Thanks so much in advance if you have any ideas or suggestions