Macbook Pro really slow since Mavericks I have a 2010 Macbook pro that is running very slowly (Clicking something takes around 4-5 seconds to react even though no graphical lag is observable) on Mac OS X Mavericks but running really fast and sweet on Fedora 20 and Ubuntu Saucy (Both running from a usb stick). 

I decided to try to reinstall the OS using the included recovery partition, which is also painfully slow (10+ hours installation slow). I decided to test for hard disk issues but SMART tests show reasonable values:




And there is also this:



Which troubles me as the speed seems to be progressively slowing down. Is Mavericks related or is the disk in need of a replacement?
Did you try Diskwarrior to repair the disk directory? It turned out to be a life saver many times for me.