When a question is put on hold (i.e., closed for a reason other than duplicate), the title links to a URL that ends with “
-on-hold”. For example, this question (Am trying to connect my laptop LAN connection) has been put on hold, and its title:
http://superuser.com/questions/612198/am-trying-to-connect-my-laptop-lan-connection-on-hold. The link works, of course –– in fact, if you follow the link, the “
-on-hold” gets stripped off –– but closed questions never did this before, and duplicates still don’t.