This is not about multiple notifications from Handcent. I already read that thread and fixed that problem before it happened. However, I have had friends tell me that they are getting the same message from me 2 or 3 times. I know the networks occasional bork and send a duplicate, my friends does it a 3 or 4 times a month.
But last night, she received duplicates of several messages. Is this some conflict between Handcent and the built-in messenger? Is there a setting change I need to make?