[Musicman247]

Do you have any email accounts set to automatically check at certain intervals? If so, then WM is probably putting them in a higher priority, which would cause tmail.exe (which is used for text, email and mms) to "freeze" until its current process completes.

This happens often to me as well when I am surfing the web. I just happen to be on right when tmail is checking for new email and it seems like the browser is unresponsive, when actually it is just waiting for the radio to become available again.