RoaringApps - App compatibility and feature support for OS X & iOS

errrr Lion is 64-bit only as far as im aware……
also, 10.6 is 64-bit on most computers.. my Late 2006 iMac runs in 64bit mode

I meant the actual computer. By default, last I read, only a few computers use the 64-bit kernel.

A computer is simply several pieces of hardware working together to present an operating system. if you are referring to OSX as the computer then most computers with 10.6 run the 64bit kernel by default. They only run 32bit if the processor doesn't support it or the user forces it into 32bit. In 10.7 so far it doesn't look like 32bit is supported anymore which is why they are phasing out support for some old processors.

Maybe I am mixing terms up. My computer is not "old", but it isn't the latest one either. I was referring to this: http://support.apple.com/kb/HT3770.

That is strange and incorrect. I have an new iMac and a new Macbook Air and both use 64bit by default. most new systems since 2010 I would think use the 64bit kernel.