I decided to move some of my code to Project Locker, but found that the build dir is always listed by SVN like:
oehoeboeroe:artemis aqua$ svn status M . ? build M Artemis.xcodeproj/aqua.perspectivev3 M Artemis.xcodeproj/aqua.pbxuser M Classes/AppBuild.hBut it is quite easy to get rid of that:
svn ps svn:ignore build .