title: PGP decrypt file via ProcessStartInfo
body: <p>I'm using the technique described on <a href="http://www.codeproject.com/Articles/22055/Automated-File-Decryption-Using-GnuPG-and-C" rel="nofollow">this</a> page to decrypt a file PGP.</p>
  
  <p>But once in a while you will see a popup to put the passphrase in command despite having indicated their passphrase to
  decrypt the file.</p>
  
  <p>Has anyone had a similar problem?</p>
  
  <p>Thank you.</p>