title: Svn: error while loading shared libraries: libserf-1.so.0
body: <p>I want to upgrade from svn 1.6 to 1.7 on my Ubuntu 10</p>
  
  <p>I followed a few links over the internet to add some repositories such as <a href="https://askubuntu.com/questions/65468/where-can-i-find-a-subversion-1-7-binary">https://askubuntu.com/questions/65468/where-can-i-find-a-subversion-1-7-binary</a> and after trying some messy things, but I landed up getting stuck with this error whenever i type svn on the command line.</p>
  
  <blockquote>
    <p>Svn: error while loading shared libraries: libserf-1.so.0 cannot open
    shared object file: No such file or directory</p>
  </blockquote>
  
  <p>No matter how many times i remove and reinstall subversion and libserf1, nothing changes. The only thing i suspect is that i get this error message</p>
  
  <blockquote>
    <p>WARNING: The following packages cannot be authenticated!   libserf1
    libsvn1 subversion</p>
  </blockquote>
  
  <p>What should i do?</p>