I just finished creating a new release on CodePlex for SVNManagerLib 0.5.6. Here is a list of what is new:

NEW - Upgraded the solution to Visual Studio 2008.
NEW - Started introducing interfaces
NEW - Introduced lazy loading of anything below repository level
NEW - Deprecated SVNController for SubversionServerController
NEW - Deprecated SVNRepository for ISubversionRepository, SubversionRepositoryBase, and SvnServeRepository. This will open the way for eventually adding Apache support.
NEW - Broke out RepositoryRootDirectoryDoesNotExistException into a file
NEW - Added support for using a global configuration file.
NEW - Added support for Subversion Realms.
NEW - Finished the code for loading dump files. Hasn't been tested yet!
NEW - Added RepositoryRootDirectoryDoesNotExistException.cs to help deal with the issue of disconnected mapped drives in Vista.
NEW - Many little code refactorings to help readability

http://www.codeplex.com/svnmanagerlib