>Thanks Ed,
>
>I was hoping for this kind of reply <s> even though it leaves me wondering how I'm getting dupes...

My first SWAG would be some sort of buffering error, but you'd have some indication when you went to close the file. For grins, I'd try -always- closing the SYSTEM table explicitly after each update - take the performance hit in the short term to see if the problem resolves itself by forcing the issue.