No, I activated it right away on the BES server. The crazy thing is that we have 8100's, 8800's and these on our BES server and not a single problem with any Blackberry except for the 8320's.
I think you are right about the firmware. If T-Mobile is not any help (which I think will be the case), I am going to try an update on one of them. The one thing I am just amazed at, is that I have had two support tickets open with RIM (After T-Mobile escalated the case) and they have been no help either.