Press option+Shift when clicking on the Xcode icon in the dock. Xcode then starts without opening previously used projects. This is related to version Version 4.5.2 (4G2008a) but I am almost sure that I used it in older versions as well.
Press option+Shift when clicking on the Xcode icon in the dock. Xcode then starts without opening previously used projects. This is related to version Version 4.5.2 (4G2008a) but I am almost sure that I used it in older versions as well.