Yeah i upgraded mine to DCD and it's doing it to me too!
I had 3.16 on mine, but wanted WM6.1, had to use the unlocker then i upgraded to DCD...forgot about radio and did that afterwards...still does it. I'm gonna try to do a hard reset then do it one by one hopefully it will work?!
Give us some more information on what you did to your phone...did you use an unlocker? Did you follow the outline made for upgrading?
http://forum.ppcgeeks.com/showthread.php?t=17667