Hey,
> The solution is to set up emacs font in .Xresources, not in ~/.emacs
>
> --
> WBR,
> Constantine

Thanks for your reply. This method worked just fine in earlier
versions of Emacs 23, but since a few months ago, it doesn't seem to
work anymore. Setting the font in ~/.emacs doesn't work either, so I'm
kind of lost for ideas.

Well, I'm using emacs23 too(emacs-snapshot debian package, I believe it's the CVS snapshot), and this solution still works for me. So, just re-check if you're not changing any fonts in your ~/.emacs
(Actually, the problem here is that if you re-define your fonts in ~/.emacs, then emacs will start with default(or defined in .Xresources/.Xdefaults) fonts and only then fonts will be changed to the ones defined in dot-emacs file and that drives emacs crazy in tiled WMs)

Again, first do not change any font settings in ~/.emacs, and then check if there will be any success

--
WBR,
Constantine