There have been a few problems with the skin servers since the release of Minecraft 1.3.1, at least partly because Mojang changed the skin server frontend (as far as I can tell). This is a little patch that forces Minecraft to use the old Amazon skin server URL rather than the new Minecraft one, bypassing the new frontend.
Installation:
To install it just extract the zip file and put the provided new auy.class in your minecraft.jar, overwriting the existing one. You’ll also need to delete the META-INF folder from the jar if you’re on a PC (or all the files inside META-INF starting with the word “MOJANG” if you’re on a Mac) as usual.
