Former implementation was to populate the "system" paths with the mounted paths. The issue is that OSX mounts some paths that are of no use such as /home (The home dirs reside in /Users). When compiled with 10.5 SDK, it retrieves the folders you have in the finder and OSX standard open/save dialog. When compiled with older SDKs, it assumes these folders are the default ones (home, Desktop, Documents, Pictures, Music, Movies).