title: Subversion misses new directories during update
body: <p>I'm using SVN 1.6.3 and TortoiseSVN 1.6.6.  Periodically when I do an update from the root of my project, SVN fails to pickup a newly added directory (added by a co-worker).  I've verified the revision number is correct and can even see the new directory (and its files) in the log for that revision.  This doesn't seem to affect all computers the same (worked fine on another one) and multiple updates won't correct it.  But, if I delete the directory above where this new directory is supposed to be and do another SVN update...the issue is resolved.</p>
  
  <p>My first thought is that its either an issue that has been resolved with a subsequent SVN release (1.6.6, etc) or an issue with my TortoiseSVN client version.  Can anyone confirm/deny either of these?  Is it easy to upgrade to a new SVN version with an existing repository?</p>
  
  <p>thanks...</p>