title: SVN update does not work anymore
body: <p>A colleague of mine had problems updating his sources. We update the folder and it looks like it's updating to the latest revision. ("updated to revision xxxx") Then, we check the log ("Show log") for some files -and the folder itself!- and we notice the update process didn't work properly. Several files are updated to a different revision two weeks ago, etc. Files with revisions older than 17/12 are all up to date, files with newer revisions only have been updated to revisions up to 17/12. In the explorer, the files have the green 'check', indicating the file is up to date.</p>
  
  <ul>
  <li>We tried a cleanup - that didn't work.</li>
  <li>Deleting the file and updating brings back the file in the right revision. </li>
  <li>It looks like updating each file seperately does work. </li>
  <li>It is possible that the problem started after some files have been added to the ignore list. </li>
  <li>It is possible that the problem started after setting the system date to
  somewhere in the past (the system date is correct now)</li>
  </ul>