title: GIT - Can't ignore .suo file
body: <p>I'm trying to work using Git with a colleague, in an application written in C#.</p>
  <p>We have added the entry &quot;project1.suo&quot; to the .gitignore file  but every time one of us has to commit the project, Git seems to tell us to commit the file &quot;project1.suo&quot; as well.</p>
  <p>We have tried many methods to add the file in .gitignore like that:</p>
  <pre><code>*.suo
  project1.suo
  c:\project\project1.suo
  </code></pre>
  <p>We cannot fix this problem.</p>