Same here in St. Louis. I only hit 100KB/sec download speed once with my N900 on T-Mobile (my N95 on AT&T could exceed that speed every time). Obviously T-Mobile hasn't upgraded the network here like they've done in other parts of the country.

Maybe it's also related to this bug:

https://bugs.maemo.org/show_bug.cgi?id=9238

I started getting these speeds at the end of May...3 miles from my house in the Balt/DC corridor.

Nice. Yeah, I think the area around 95 is pretty much 3G covered. It's more the Montgomery County side they need to upgrade. =P

I get 3.5g speeds in Fort Worth, TX. Seems kind of spotty though.

I get a steady 4Mbit-5Mbits here in houston.

It may use 3G or 3.5G on the same plan. But however I believe TMobile throttles the bandwidth based on the plan. I have a grandfathered tzones and it runs on 3.5G but never get anything more than 1Mbps down/1Mbps up.

i never went down below 100 since tmobile upgraded CT to hspa

So I also have tmobile usa here in california, so when I log into my account and choose my phone number what pretend phone do I choose for the 5.99 t-zones to work on my n900?

Tmobile does not throttle speeds on granfathered plans. You will get whatever speed the tower that you are connected to is capable of. DO NOT UPGRADE TO A HIGHER PRICED PLAN! You will get the same speeds and pay way more for it. I have the 5.99 Tzones on 5 lines. I have gotten over 7Mbps and I have a video showing speeds over 6Mbps on 3.5G

http://www.youtube.com/watch?v=t6DqZC0SZZk

Also, having a 3.5G signal does NOT mean you will get 3.5G speeds. All that means it that you are connected to a 3.5G capable tower. You will not get faster speeds until the backhaul and bandwith of that tower has been fully upgraded. I watched a 3.5G signal on my N900 with less than 1Mbps for 2 Months before Tmo hit the switch and activated the 4G speeds on Atlanta area. The HSPA+ rollout is just an upgrade to the towers. If your N900 displays 3.5G and you dont have 4G speeds yet, be patient, the upgrade is almost finished in your area and you WILL enjoy faster speeds at lower prices.

Dont ever let Tmobile trick you out of your tzones access. It is the same internet as the more expensive plans.

I use the t-mobile shadow unlimited internet plan for $10 and it works fine on the n900. I also bounce from 3g to 3.5g depending on location. This is in Minnesota.