I recently noticed that my iMac7,1 appears to be running a 64-bit kernel since upgrading to lion. This is interesting since my mac was previously incompatible with a 64-bit kernel in Snow Leopard. Can anyone else confirm this about the iMac7,1 and / or other previously incompatible macs? To tell if you are running a 64-bit kernel: http://support.apple.com/kb/HT4287 Also, my apologies if this was previously reported. If so, could one kindly provide the link, thanks!