Hi, I had Xcode 3.2.6 installed on my Snow Leopard Mac. Yesterday I upgraded to Lion, and today I installed Xcode 4 via the App Store. The problem is that Xcode 3 is still installed and its icon is still in the dock. I can't find any installation instructions (presumably because there's no longer an actual installation?) so I can't tell if I was supposed to run the uninstall script first or not. Can someone tell me how to properly remove Xcode 3 and get Xcode 4 properly installed? I read one post saying to just delete the /Developer folder; not sure if that's safe to do... are there any debug services running out of that folder? Thanks! P.S. I'm used to installing the Unix tools to get gcc, etc. in /usr. Is that now the "Command Line Tools" item in the Downloads pane of Xcode Preferences?