Hi, I have a 2010 Macbook Air that I have secured with a firmware password and am currently using Filevault 2. I also have a guest account with tracking software enabled. Recently I was wondering whether the Filevault encryption actually added any security for me. With it enabled, any thief would not be able to log in to my administrator account, nor would they be able to reinstall OSX because of the firmware password (and since the battery and memory is non-removable the firmware password cannot be reset, right? I'm hoping removing and reattaching the SSD would not reset the firmware password?). If I were to remove the Filevault encryption, the thief would still not be able to reinstall or login to my password protected administrator account, right? Would they be able to access my files from another computer by connecting the SSD to it somehow? I guess my question is how secure the account password is by itself? Since my Core2Duo processor doesn't have hardware accelerated encryption, I would prefer to not use Filevault if it doesn't reduce my security by too much (I get that my files would no longer be encrypted, but what level of protection would they have by the account password? None?) Not sure where to put this thread, feel free to move it if I picked the wrong spot. Thanks for any replies!