Ok, this is a regular InfoPath form that submits to a library. Your form submit is set up to concat the APPID and NewID for the name, and the connection is set to overwrite if it exists. So yeah, if anyone enters the same APPID / NewID combo, you'll end up with overwrites. What do you want to have happen if someone selects the same combination in a number of forms? I usually add a field to the data source for form name, set it on submit (including the current date/time to ensure uniqueness) and then use that for the form name in my submit connection.
Hilary Stoupa
