I'm using a Treo 300 under Linux with USB and WirelessModem. No problems establishing the connection, and simple things like checking mail work fine, but if I transfer more than about 100k, or if I try to do something that opens multiple TCP connections (like a web browser), the connection stops working. The connection seems to be active, and WirelessModem doesn't show any kind of change, but no data can be transferred. Even pings to the DNS servers go unanswered. Anybody have any ideas?