Try these ones: http://www9.limewire.com:82/download/ & also http://www.oldversion.com/program.php?n=limewire or did you already try those?!

Oh 4.0.4 may have been taken out of circulation for some reason. But 4.0.8 seems to be there. I guess I should comment that if a particular version is now unavailable it's b/c it was not healthy for the Nutella Network. Changes to LW are not just to improve the program itself but also to make it a more p2p network community responsible app.