10.7.4 changed my dock background—how do I change it back? I upgraded to 10.7.4 and my dock on the bottom (with no enhancements) received this light/shadow box effect on startup. (It used to have no background.) I don't seen an option to remove it—is this a bug or a permanent change, and how can I easily revert it?
Try this:


Launch Terminal.app from /Applications/Utilities/
Type defaults write com.apple.dock no-glass -boolean NO and press return.
Type killall Dock and press return.