The San Fernando Valley sewage spill during a Y2K test in news reports was traced to a 1985 programmer mistake in the code. What combination of events tickled the bug, and why nothing at the plant alerted operators to the problem is still being investigated. In the Internet world, NSI announced on Friday their Y2K test program for domain name servers. If you choose to participate, I noticed NSI plans to use NTP for clock synchronization. One problem which has shown up in other Y2K tests is failing to keep the NTP test network properly isolated from the NTP production network. With correct stratum settings and a good NTP web, if the test and production networks are accidently connected, NTP figures out someone's clock is insane. However, in a few cases NTP on a production machine which isn't properly isolated will synchronize with the test NTP network, e.g. if a machine reboots, and uses a NTP broadcast to set its clock when booting. Unlike the financial industry which can do testing on the weekends, when few real transactions are in the system, the Internet is a 24x7 network. So be careful out there. http://biz.yahoo.com/bw/990618/va_network_2.html http://www.root2000.com/ -- Sean Donelan, Data Research Associates, Inc, St. Louis, MO Affiliation given for identification not representation