I made a simple gtk man page viewer that uses popen("man [page] | col-b", "r").
Most of the time it works fine but I've begun to notice that there are a number (maybe one in ten) of pages that return "No manual page for [page]" even tho the other pages in the same path are found, and the exact same command on the command line works fine.
Perhaps this is not exactly a code problem but I don't know who/where else to ask...
ps (later): i was so ticked off about this I actually removed my man rpm and build "man-db" (which is also supposedly faster) from source -- but it does the same thing