I was waiting for the other shoe to drop for this bug. Surely the errant code wasn't only in the router task. Well, it seems that it's NOT only the router.
After working with a customer on fail-over issues in a cluster we came across this interesting availability index "issue". On a server patched for the router bug (or that is un-patched server that has not been rebooted) the "show ai" command behaves as expected, the XF, Hits and AI min and max are populated
However, on a rebooted, un-patched server AI is completely and utterly blank
This is a companion discussion topic for the original entry at https://blog.darrenduke.net/darren/ddbz.nsf/dx/domino-router-bug-seems-to-also-affect-server-availability-index.htm