*UPDATE* - This issue is now marked as resolved and T-Mobile customers should find their data flowing fine now.
It looks like a handful of T-Mobile users are having some issues with BlackBerry data this morning. It appears as if T-Mo may have some kind of problem that is crapping out BlackBerry services, but we're not sure just what the cause is. It feels pretty much like the same issue we saw a few months back though. We'll see what we can find out, but in the meantime, swing by this thread and let us know if your data is working.