If you were watching closely and knew what to look for in the first couple of months of 2000, the failures were there. But they were generally minor and easy to overlook as Y2K problems.

I spotted something like half a dozen failures in various systems I interact with which I strongly suspected, based upon the timing, were likely Y2K problems that slipped through testing. For example, I received duplicate bills for one of my credit cards for the January 2000 billing period, and then a subsequent apology for the duplicate bills. They never said Y2K, but the timing was very suggestive.

It's pretty much exactly what I expected from most companies...the big stuff had been largely been dealt with, but a few things slipped through which they could dismiss with some hand-waving. The thing that surprised me was that there didn't really seem to be any high profile disasters (like a company that couldn't ship products, an airline that couldn't issue tickets, or whatever) at all...I figured there'd be at least a couple.