Situation: When I launch Xcode, socketfilterfw, OS X's application based firewall, starts using a lot of CPU. After some research I narrowed it down to this: socketfilterfw reads all the files in Xcode.app's bundle and does this every time Xcode launches. Gigabytes of data, every time. It doesn't matter what settings the firewall has, I tried them all. The only thing that stops this is to deactiva