I referenced backlinks of another site whose count I documented and was surprised at the change. I checked the counts for some of my own sites and saw changes there too.
Here's how I was checking:
linkdomain:example.com -site:example.com
tahiti
4:54 pm on Oct 7, 2008 (gmt 0)
Strange, the problem I have with Yahoo! recently is that they are not counting my back links. I wonder anyone sees the same as me.