have you tried keeping an eye on you signal strength? instead of resetting have u tried to mannually reconnect?

Where I work I get 3g... at the door to my office It's still good but the minute I walk through the door my signal goes up and down like a hores draws! sometimes it will show 2 bars on 2g but network connection lossed as you state, I have set it to recconect on it's own and eventually it does...

Im soooo sure it's the server upstairs! it's a monster and I bet pumps out soo much interferance.