surprised to see people still having problems.
Seriously, flash to a different radio. Both my brother and I started having problems with our diamonds about the same time.
Trying to flash to stock roms, custom roms, etc didn't do anything. the extra bin file didnt do anything.
but i went ahead and flashed to a sprint 1.12 rom and everything works fine. Told my brother the same thing, and his was fixed too after he flashed to new radio rom. and no, it doesn't wipe out any of your data.
http://www.everythingdiamond.info/showthread.php?t=43