title: TortoiseSVN hangs on "Sending Content" when commit new data
body: <p>I am using as server the latest VisualSVN, and its been updated from SVN 1.6 to SVN 1.7.
  also i have updated the TortoiseSVN to 1.7.1.
  when i try to commit to the repository, its runs all the add command and then hang on <strong>"Sending Content"</strong> on random file.
  after some time its write:</p>
  
  <blockquote>
    <p>Error: Commit failed (details follow):   Error: Server sent unexpected
    return value (500 Internal Server Error) in response to   Error:  PUT
    request for</p>
  </blockquote>
  
  <p>i see all my old repositories and can update and so...
  but if i create new folder (and new repository for it), checkout it.
  when i commit the content its still hang on that message.</p>