I've found a fix for my 3G connection problem. I'm with Telstra (Australia). Two bugs:- 1. They set the APN to telstra.mms - this is of course incorrect, it should be telstra.internet. This wasn't the solution however. 2. They set the Proxy to manual with all its' associated settings. However I suspect these are not fixed and can vary from time to time. I set this to Automatic and now have a stable 3G connection.