We were getting duplicate mail files here as well. The problem appears to be related to the communications problems at node UGA. It seems that when a VMNET link crashes, sometimes the sending node re-queues the file even though the receiving side thinks the transfer is complete. So when the link re-starts, the same file is sent. The connectivity problems at UGA were so bad that the same file was being sent over and over again. It was just a coincidence that Listserv was involved. The people at UGA are aware that there was a problem. I believe that their communications troubles have been resolved for the most part. -jj