I figured I would ask if anyone has this problem before opening a bug report.
I am using Intellij 7.0M1a and Subversion 1.4.3 when I select "Compare with Latest Repository Version" I get the following error (took out the actual URL)
Error:svn: Authentication required for ']]> Subversion Repository'
This only happens with the compare with latest operation, all other operations work just fine. I can checkout from the repository, I can commit, update, show history, etc.