Just noticed when I viewed the What's New page that if there are no threads, it displays "Showing threads 1 to 1 of 1"...unless, of course, this is due to a new thread from someone I have on ignore. Either way, should be corrected
This is partially as designed - you can't really do much about it in some circumstances.
However, I've changed new threads to not try to fetch threads by ignored users. (And the automatic forum read checks ignore threads started by ignored users too.)