I think part of the problem w/ performance issues is that Apple doesn't seem to give a crap about older hardware. The upgrade from snow leopard to lion pretty m

I think part of the problem w/ performance issues is that Apple doesn't seem to give a crap about older hardware. The upgrade from snow leopard to lion pretty much left my mid 2009 macbook pro unusable. After many miserable months I gave up and switched over to a linux desktop for full time development work. However, my brand new shiny 2012 macbook air _flies_. It's about as fast (build times, and what not), as my 2009 era desktop running linux. I have had similar experiences with my iphone hardware. You have to keep upgrading hardware if you want to keep up with the latest software. Given that, there are still some awful bugs in later incarnations of OS X that remain unfixed. For example, lion's retina support broke external 30" displays in landscape mode. This is still not fixed 2 years later, despite bug reports and a very easy to reproduce problem. Apple just doesn't give a f*ck about power users anymore.