Me, erigol and sean had a little discussion on this yesterday. The
manual lookup functions use the metaphone() function to add to a list of
possible matches to the search (sections having a higher priority over
functions then metaphones). Strangely enough, the metaphone for
"security" is very similar to "sqrt" (ess-cue-arr-tee). This issue also
happens on ca.php.net too. We haven't found a solution yet but maybe it
has something to do with the manual-lookup.sqlite database (even though
us4 and ca have completely different {modification date + md5}
databases)... Or maybe not because au has the same database as ca :/
Well, theoretically security.php should be found for the first time when hitting the /security shortcut on any mirror. Since there is a direct file name mapping, which should be checked first. I woul be happy if somsone could look into the code and provide a patch :)
Goba