i do have the exact same problem, but this seems related to the MMS function. App works fine unless you are sending/receiving a MMS. I posted this some time ago:
I do have the same problem in 2.4.6, tried reflashing, and of...
Im having strange problems sending MMS. The Messaging application crashes all the time when i try to send a MMS.
I ran adb logcat while recreating the problem and found this in the log: