Not grinding on PC users here so please don't take it that way. To each their own. I have a Mac Pro that was built 8 or 9 years ago that has been trouble free since I purchased it used 7 years ago with the only exception being a graphics card went bad. Now the second issue pops up and that is I cannot load LR5 because the operating system is not upgradable and will not accept LR5.
The machine works great in everything else. I do have a MacBookPro that I was able to get LR5 loaded too so the software can be used. Just wondering for you out there that use Macs when do you call it quits and upgrade? Not a grind on PC but when I used them I was lucky to get 3 to 4 years out of them and upgrades where more common so I never ran into this before.

