The Tex Live distribution Mac OS X is getting more outdated by the day. Maybe there’s a way to update it, but I didn’t bother to check.
For a reasonably good layout of letters without a footer I found that a recent version of KOMAscript is required. I’m using Version 2.98 obtained from http://dante.ctan.org/.
Installing the new version proved to be quite easy:
$ cd /usr/local/texlive/2007/texmf-dist $ sudo unzip komascript.tds.zip $ sudo texconfig rehash