when using the latest slime on OpenMCL is was successfully able to start and use slime, however executinng (asdf:oos 'asdf:load-op :swank) failed on errors regarding the redefinition of generic functions as "regular" functions. namely all of those functions defined via definterface in swank-backend which were then defined via defslimefun or defslimefun-unimplemented in swank-openmcl.lisp (which makes sense considering how these macro are defiened). what still seems odd is that M-x slime was able to successfully compile and load everything. anyway, if someone hasn't already done this i can send a simple patch which removes the incorrect forms and updates swank-openmcl to use defimplementation where approriate.
-- Marco Ring the bells that still can ring. Forget the perfect offering. There is a crack in everything. That's how the light gets in. -Leonard Cohen