I have a 2012 cMBP with samsung 830 ssd. I enabled trim through the terminal and all was working fine. Then earlier i installed a software update from apple to 10.8.2. Now i am not able to enable trim through the terminal. I followed all of the steps listed here: http://digitaldj.net/2011/07/21/trim-enabler-for-lion/ This is the method I used the first time I enabled trim and it worked fine but now it seems to not be working. Is anyone else having this issue? Any help with this situation would be greatly appreciated.