bug in the Tux skin (and solution)

hello, the Tux skin has a problem with the arrow pics that are used to contract/expand the contact groups, this problem was that the "hover" pic it's not of the same size of the normal one, that in my previous distro was a little annoying but now it makes amsn to hung.
I've solved this replacing the hover pics with ones of correct size (I've just copied contract.png and expand.png into contract_hover.png and expand_hover.png respectively). This has solved the problem, maybe the author of this skin may want to create proper hover pics for it's next version.