On the whole, Y2K came and went without major immediately noted problems.
Predictions still abound for deferred problems.
In this message, I have attempted to summarize in one place some of the reported Y2K weirdnesses. There are a lot of lessons that should have been learned from the entire process, but we'll address those in this forum later on after a little more time to reflect. Dave Stringer-Calvert has been monitoring CSL's Y2K compliance. This is apparently a widespread problem. The comment is wonderful.