I reinstalled NAV 2003 and it seems to have gone away. I think that the NAV 2003 program invoked it. But somehow the LUSERVER got clobbered on the disk. I am scanning the disk for errors now while I use my W2K server that does not run the NAV 2003, but instead runs a different Antivirus program. NAV 2003 won't run on the Server version of W2k for some reason. But others will.