I have a lot of changes in a working folder, and something screwed up trying to do an update.
Now when I issue an \'svn cleanup\' I get:
>svn clea
I had the exact same problem. I couldn't commit, and cleanup would fail.
Using a command-line client I was able to see an error message indicating that it was failing to move a file from .svn/props to .svn/prop-base.
I looked at the specific file and found that it was marked read-only. After removing the read-only attribute I was able to cleanup the folder and the commit my changes.