That's from people that think they can run it on old mac that have little RAM. I find it works best and quickest on my 2008 Mac Pro 9in my Signature). I guess because of the big pipes and dual Zeon Processors. So just make sure you have a modern Mac and at least 4G of RAM and it should run just find 9also make sure you have at least half of your Startup drive blank for cache management.
Originally Posted by mamameya
Mac Pro Dual 2.8 Quad (2nd gen), 14G Ram, Two DVD-RW Drives, OS X 10.9.1
2006 Mac Book Pro 2.16 (first Gen) OS X 10.7.5
2TB Time Capsule, 2 TB
32G iPhone 4S Black, iPad (3rd Gen) 32G Black