It seems like Apple is no longer giving driver support to the ISub in Mac OS X 10.5 Leopard, both for PPC and Intel platforms. The ISub is a beautiful piece of hardware and sounds really good. We do not understand why Apple Mac customers should not keep on using it with new OS X 10.5 and new Macs, since it works so fine. Apple, do not be so blind and please, give us back software support for the ISub, in some next Leopard update. Thank you The undersigned