I found exactly the same in New York. T-Mobile was slow, scanned again and tried AT&T and that was fast enough to happily download tv shows from newsgroups and the like.
In a country that has 3 (or more often Hutchinson Telecom) you're limited to just using that though. Found the speed was fine in Ireland, crap in Indonesia (although I have no idea how fast mobile internet would be expected to be in Indonesia so I viewed any coverage as a bonus).
I found exactly the same in New York. T-Mobile was slow, scanned again and tried AT&T and that was fast enough to happily download tv shows from newsgroups and the like.
In a country that has 3 (or more often Hutchinson Telecom) you're limited to just using that though. Found the speed was fine in Ireland, crap in Indonesia (although I have no idea how fast mobile internet would be expected to be in Indonesia so I viewed any coverage as a bonus).