For those experiencing the issue with text messaging since the Froyo update a fix is on the way. The "fix" will address the issue of incoming and outgoing messages not being updated properly in the message queue, and there are some reported problems with SMS notifications, as well.
The details of when the update will be released is unknown at this time.
Motorola is now aware of the issue and have released this statement in their support forums:
Okay. I have news. I talked to our engineering team and it appears that this will require a software upgrade to correct it. They are already on it and seemed confident that they know the why and the how-to-fix. I don’t have any timeline on when an update will be released, but when I know more I will let you know.
Sorry for this trouble and thanks for all the good detective work and for reporting it.
This is obviously not a small problem if you are one of the users effected by it. How many of you are experiencing this particular problem?
Source: Phonedog