Wenwu, > Each node has ntpd running. Excellent! > > What version of the LDM are you running? > > > ldm-6.4.1 There have been several bug-fixes since version 6.4.1. I recommend that you try the latest beta version at ftp://ftp.unidata.ucar.edu/pub/ldm/beta/ldm-6.4.7.5.tar.Z This version logs a warning if a data-product that appears to have been created in the future is inserted into the product-queue, so -- depending on the data-products you receive -- the log files could get quite large. Please let me know this version helps or not. Regards, Steve Emmerson Ticket Details =================== Ticket ID: QOQ-440372 Department: Support LDM Priority: Normal Status: On Hold