hmm, I think you might just be a timely example of a the discussion in another thread.
http://forum.ppcgeeks.com/showthread.php?t=100180
I believe it's because you did not do an extra hard reset after flashing the updated rom or possible by not flashing via active sync?
the latter can be determined by the radio, pri, and prL versions.
the former just took care of it's self