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Robert, I modified the LDM code so that it should log the reason why your upstream connection is spontaneously closing. The new version is at <ftp://ftp.unidata.ucar.edu/pub/ldm/beta/ldm-6.4.6.0.tar.Z>. Would you please try it and tell me what you discover. I tried it here and it works for normal operation. Unfortunately, testing the modifications here is very difficult because I can't duplicate your situation. If the new version crashes and burns, then revert to the old version immediately. Regards, Steve Emmerson Ticket Details =================== Ticket ID: AET-991057 Department: Support LDM Priority: Normal Status: On Hold