Hi there. New to mac and OS x. Just got me a rMBP (i7 2,3; 16GB, 256 SSD >free 75GB). Latest ML updates installed. A few times now I've encountered that moving large folders or files take forever? yesterday I wanted to move my iPhoto library (126GB) to another folder (on my internal SSD). I quit iPhoto (cmd-Q) and dragged the iPhoto folder to it's new location. After looking at the 'preparing to copy pop-up' for about 20 minutes I shut down the operation. On my old Windows laptop, moving such a large file from one location to another takes about 2 seconds. Just as long as it is on the same hard drive. I tested it with one smaller document and that I can drag easily to another location. I'm I doing something wrong? Is it something about how OS x works?