I searched for the old Stern Show thread, but it appears that it has been locked.
Anyway, the show was supposed to be live (with Jimmy Fallon as guest, no less) today and instead is a repeat with no explaination. There is much online speculation that either Robin or one of Howard's parents has had a major health crisis. Longtime fans know that Howard never misses a scheduled show, so something is amiss.
Stay tuned.