As you can see at http://www.dipe.org/kmldonkey/ , kmldonkey as a problem when used with mldonkey 2.5.28. The attached ebuild applies a (modified) patch to the sources to work with newer version of mldonkey.
Created attachment 39436 [details] kmldonkey-0.10_pre3-r1.ebuild
Created attachment 39437 [details, diff] 0.10_pre3-mldonkey-2.5.28.patch
Ok now we have the pre4 so this isn't needed anymore.