I'm still confundled.
I have the latest SVN version of SFML, compiled using the batch process, and when I attempt to build my project I still get those undefined errors like on the first post.
My MinGW version is 4.4, the version supplied on the tutorial. I also made sure to rebuild the libraries with MinGW 4.4 installed.
[EDIT] Well, no, they're not the same, actually.
I know I'm not forgetting to link properly, because I've checked over that constantly. (-lsfml-system-s, -lsfml-window-s, -lsfml-graphics-s, -lsfml-audio-s)