Ralph, I've had these at least 5 times now. The solution is to contact the postmaster at that person's node. 3 of the 5 times the loop was because the local mailer was looping to one or more people at their site. The other 2 times were mystery loops but I think I tracked one of them down to a machine at Berkeley but the postmaster denied there was a problem. Strangely enough after I notifed the postmaster the problem stopped. If the Listserv propogates a loop then I believe everyone on the list will get looped not just a few isolated people. However, one of my loops was caused by a backbone listserver elsewhere that crashed during the night and sent several duplicates to people. The postmaster at that site was very responsive and fixed the problem quickly. Diane ***************************************************************** Diane K. Kovacs - Moderator GovDoc-L Instructor, Reference Librarian for the Humanities Kent State University Libraries Kent, Ohio 44242 Phone: (216)672-3045 Bitnet: DKOVACS@kentvm or LIBRK329@kentvms Internet: [log in to unmask] or [log in to unmask] *****************************************************************