For a long time, slime has disabled slime-autodoc (eldoc) when running on xemacs. I don't know what has happened, but slime-autodoc works fine now with the xemacs' version of eldoc. (I had been using a ported version of emacs eldoc that worked fine with slime-autodoc.)
Can that be removed now? I'm probably the only one left that cares. :-)
Ray