[usocket-devel] undefined functions

When I try to load hunchentoot with asdf I get this errors:

; Undefined functions: ; USOCKET::%ADD-WAITER USOCKET::%REMOVE-WAITER USOCKET::%SETUP-WAIT-LIST USOCKET::WAIT-FOR-INPUT-INTERNAL

When I try to load usocket with asdf I get:

WARNING: wait-for-input not (yet!) supported...

and when I try to start hunchentoot with:

(hunchentoot:start (make-instance 'hunchentoot:acceptor :port 8000))

I get:

The function USOCKET::%SETUP-WAIT-LIST is undefined. [Condition of type UNDEFINED-FUNCTION]

What can I do, I can't start hunchentoot ?

I use emacs/sbcl/slime on windows.

Thanks