Hi guys, In the wake of the recent NSA/PRISM news, I've been evaluating all my existing security measures (no, I'm not paranoid, it just reminded me that now would be a good time to take another look at security across the board). One thing I recently came across which I hadn't heard of before was the use of an EFI password. Obviously the benefit is that if my Macbook Pro gets stolen, the thief won't be able to wipe the hard drive and re-install OS X without getting the firmware password reset by Apple or an authorized reseller (who won't do it, because they won't have a proof of purchase for the machine). But are there any known downsides to adding an EFI firmware password (other than the small inconvenience of having to enter the password when needing to boot to a different drive, reinstall OS X, etc.)? I've seen vague warnings from some other people about things "simply not working" with an EFI password. Is there any impact on peripherals or functionality while I'm logged in? I'm not concerned about losing the password; it will be safely stored, encrypted, and backed up. Thanks!