I own a Macbook Pro 15" Early 2011. I've recently purchased a Samsung 840 EVO 120 GB Solid State drive. I also purchased an Optibay drive caddy so I am able to install my OS and applications on the SSD and use the original HDD as storage. After finally figuring out that I had to take the drive out of the optibay caddy to actually have the OSX mavericks install on it, I start to install my software on it and the weirdest thing happens: after a few hours of use on the fresh Mavericks install on the SSD, my fans start running at >6000 RPM and everything seems to be corrupted. I was unable to open most applications, and was unable to delete files/applications from Finder. Also, the icons in the dock looked like static on a TV. (https://www.dropbox.com/s/xslyh8yr5p7sebv/Photo Oct 27, 9 02 34 PM.jpg) Obviously corrupted somehow. So luckily I still had my OSX Mavericks installed on my other hard drive that was in the primary spot. So I booted to that HDD, erased the SSD in disk utility, and re-installed Mavericks on the SSD once more. Again, after a few hours of work the same symptoms were occuring. So again I erased the SSD. After experiencing this, I naturally thought something was wrong with the SSD drive. So I gave Samsung a call to see if I could have it replaced, and the guy there told me to use TRIM enabler. (http://www.groths.org/software/trimenabler/) he said that may solve my issues. I wanted to post on here to see what you guys think, because I'm really tired of having to take my SSD out of my laptop and deal with this. I use my computer for school and work, so it's really hard to be out of commission for even a few hours. Do you think I should try to get Samsung to replace the drive? Do you think TRIM enabler will fix my issues? Should I install an earlier version of OSX on the SSD? Thanks in advance.