Forum Bug - Unable to go to 2nd Page of Discussion

I'm hoping this is a real bug, I have tested it in several browsers this time, to rule out a caching issue.

I am unable to go to the 2nd page of any discussion topic in the forum. Some links take me to the first page of a topic, some (like the 'next page' button) take me back to the main forum page.

Ah, well spotted. I've avoided the problem for the time being by showing more messages on one page!