Hello All, i have a problem with my Snow Leopard installation. Since I've installed Snow Leopard, my external USB HD won't work anymore. It's a ICY BOX case with USB 2 and Firewire 400 interface. The mac is a mid 2009 mac mini (9400m). Has somebody an idea what could be wrong? thanks P.S.: It doesn't show up in the disc utility PP.S.: I tried two different hard drives in the enclosure, but all worked fine before Snow Leopard!