I am using VS2008 and Resharper. Resharper creates a directory _Resharper.ProjectName. These files provide no value for source control that I am aware of and cause issues
SVN only controls what you put into it when creating your repository. Don't just import your entire project folder but import a "clean" folder BEFORE doing a build. After the build you get all the object files or your _Resharper folder etc. but they are not version controlled.
I forgot: the
svn:ignorecommand is another possibility to tell SVN to exclude certain files. You can add this as a property to the version controlled folders, e.g. with TortoiseSVN.