This totally hoses my integration... can't do anything useful. This happens when I do a "SVN Upgrade" on source. It's failing on source I've never modified before. Going to install 1.6 and do a clean up on the projects.
TortoiseSVN-1.7.0\ext\subversion\subversion\libsvn_wc\entries.c' line 1935: assertion failed (svn_checksum_match(entry_md5_checksum, found_md5_checksum))
