Ah right.
It happened to me today when I tried posted this message:
http://www.gossamer-threads.com/...i?post=197387#197387 It doesn't happen to me anymore, though. I've tested twice on that thread and both messages got through OK (and I've since deleted them).
The only thing I can think of is for you to look up in the database and see who is watching that thread? Maybe check to see if their email address was invalid? Check to see if they have made any changes to their profile after 12:00~ish?
Does the fact that the user
courierb has no email in his or her profile might of triggered this when trying to send mail? That's the only user I can think of that might of been watching this thread...
Hope this helps.
- wil