Version: 3.4, CVS (using KDE KDE 3.4.0) Installed from: Compiled From Sources On http://developer.kde.org/documentation/library/cvs-api/kio/html/index.html click on http://developer.kde.org/documentation/library/cvs-api/kio/html/classKTrader.html and you'll recieve a 404. Same missing page in the downloadable offline version of docs. Sorry if this is a dup, its kind of a hard to search for.
That is strange, because calling "unsermake apidox" locally in the kdelibs directory does create the "share/doc/HTML/en/kdelibs-apidocs/kio/html/classKTrader.html" file.
Appears to have been a transitionary problem - links in original report now work fine.