OS X has a unique (and very nice) architectural feature of multi-architecture
binaries. However, this is the root of many problems people see in Snow Leopard. Let me explain: Leopard was a mixed 64 / 32 bit system (ignore Intel / PPC). Default was 32 bit . Applications wer build 32 bit if not explicitly requested otherwise. Almost all 3rd-party apps were 32 bit build. Snow Leopard...