Suddenly unable to send text messages

[szer]

In Australia, unlocked Treo750 on the Optus network. Upgraded seamlessly to WM6 a coupe of months ago and all well until a few days ago.
Suddenly, the messaging operation appears to be corrupt in that incoming sms messages are received normally, but new messages created by me (including attempts to reply) are not sent: they do NOT appear in either the outbox or drafts or sent items folders. Also the Sent Items folder appears to be corrupted in that there are 52 apparent messages there which I cannot delete. When I open this folder, the screen redraws incompletely (the top left hand folder list with the drop-down list of folders is where this failure to redraw occurs) and the messages that are there appear as blank lines which if opened, contain the text of a sent sms message but without a destination and it is impossible to delete them. I have purged all messages from the received, saved and template folders but this makes no difference. When attempting to delete one of the 52 messages (I have found no way to do a group delete), I receive an error message that messaging.exe or the like has encountered an error and needs to close down or the messaging app just closes and returns me to the home screen. I have tried several soft reboots and have removed the battery on several occasions as well but the problem persists. HELP!

[szer]

Palm Support, whio responded amazingly quickly suggested a hard reset (which I was trying to avoid). Miraculously, I tried on emore time to reply to an sms but held the send button down for about 30 seconds and everything went back to normal. Hope this helps someone.

[jfa]

Most interesting solution.