get the web2go and change the stock apn configured automatically by n900 to another called epc.tmobile.com and you are all free of proxies, this worked when I had a T-Zones and it is still working on my N95 and iphone with web2go now. I even tether to my laptop every once in a while with n95 and works like a charm, i know i know its edge but still something is better than nothing when you really need it.