Having upgraded from Snow Leopard to Mountain Lion a few days ago, I find that most of the 'man' entries from section 3 (programming functions) are missing. For example:
phillip-millss-macbook-pro:etc phil$ man fopen No manual entry for fopen
Exploring with the terminal shows me that all that remains in man3 directories within the 'man' search path are things related to Perl.
Is there something extra that I should be installing to get the reference information back?