I've noticed that after every data bytes session has completed that I no longer have data from the network. It isn't until I disconnect and reconnect to the network that my data services resume.
This is more than a little annoying and basically renders this feature unusable. I have on many occasions forgotten to disconnect/reconnect to the network after a data bytes session has ended to find that I've missed an entire afternoon of messages (that require data services).
Do other users experience the same problem? Data services should transition cleanly from a data bytes session to normal use without the user having to reconnect to the network. This appears to be an oversight in your system that should be fixed. Please fix it.