My guess is that what you've installed has added some extra directories to your MANPATH
and likely nuked some standard directories from MANPATH
.
First run man --path
to determine which directories man
will search for man pages. Here's what I see:
$ man --path /opt/local/share/man:/usr/local/share/man:/usr/local/mysql/man:/usr/share/man:/usr/X11/man
If you don't see /usr/share/man
in this output, you won't get standard man pages.
The delay you're seeing could also be related to man
rebuilding its index of pages and/or doing some preformatting for the stuff you've installed.