100% of the recipients of the 1.5h shipments have received it in a very acceptable delay, and there was not a single distribution problem (eg missing ack, internal error, validity check and suchlike). I only checked the MEMO distribution -- it took me a lot of time to write down all the names on a piece of paper and cross them one after the other and I decided not to do it again for the SHIPMENT acks. :-) Anyway, DISTRIBUTE seems to have been resurrected by the 1.5g changes. There are only 4 1.5f servers left in the net (UIUCVMD, IRLEARN, HEARN and TAMCBA) so we can hope that very little DISTRIBUTE jobs will encounter the validity check problem again. Eric