Dearest lazyweb ...
It looks very much like Subversion doesn't handle Mac OS X "bundles" ... collections of files that certain applications output as their saved format. For example Keynote's saved files are actually a directory containing individual images, pdf files, and XML. When these applications save the bundles, they remove the old directory and replace it with a new one, thereby destroying the .svn directory that holds all the source control details. (See Things to Watch Out For on making the jump to subversion.)
I want a script or a modification to svn that will handle this ... surely someone out there has already fixed it?