I got my latest MacLife magazine today, and inside are 25 terminal tips. I entered the terminal action to add the Recently Used stack to the dock. I entered the line of code just as it appeared in the magazine: defaults write com.apple.dock persistent-others -array-add '( "tile-data" = ( "list-type" = 1; ); "tile-type" = "recents-tile"; )'; killall Dock. After entering this line of code, my dock quit, and my computer freezes after about 3-5 minutes after a reboot. I've verified and repaired permissions, reset the pram, I've deleted the com.apple.dock.db file, but despite my best efforts, and several hours of googling, I cannot get my dock back. The Dock.app file does still exist in the system library folder. I know that messing in the terminal can be dangerous, but I thought something this harmless, especially following exactly the instructions in the magazine, I never thought this would create such a hassle. I'm at a loss and I'm really hoping I don't have to reinstall osx for something so stupid as this. Thanks for any suggestions you can offer.