I recently upgraded to Xcode 4 (which is a great upgrade) but now I\'m getting some warnings that I did not get before. I have looked through forums and other SO posts but
Disabling SVN in Xcode prevents these issues (assuming you're managing your repository with another SVN tool). See this question:
Can you disable version control integration in Xcode 4?
Obviously, this might not be practical if there are other Xcode projects you do want to use SVN with.