Hi, Don't know if anyone has noticed, but netkas has posted some info about the 64 bit snow leopard kernel here. It appears that everything except xserves boot the 32 bit kernel. He also says that a particular kernel can only load kexts with the same 'bitness', for lack of a better term. So what does this mean then for 2006/7 mac pro owners with EFI32? Also, will 2008/9 mac pro's only load the 32 bit kernel? And might this cause a driver nightmare for those who swap kernels as netkas describes in the posting?