How To: Disable OS X Quick Look
Quick Look in OS X is an awesome feature. I’m constantly using it to check out PDF files without needing to open them.
But in some environments, it doesn’t make sense or causes a huge amount of issues.
So to disable this, in the terminal type; (as root or admin user)
defaults write “$3/System/Library/LaunchAgents/com.apple.quicklook” Disabled -bool true
Restart the Finder, and you’re good to go!
This works in 10.6.x but apparently crashes 10.5.x (I’m not able to confirm the later as I don’t have 10.5)