title: ActionBar Sherlock Progressbar not showing on 3.1 but on 4.0+
body: <p>looks like i have a smaller Problem but cant find why.
  In my SherlockFragmentActivity onCreate i do the following:</p>
  
  <pre><code>@Override
  public void onCreate(final Bundle savedInstanceState)
  {
      requestWindowFeature(Window.FEATURE_PROGRESS);
      requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
      super.onCreate(savedInstanceState);
  </code></pre>
  
  <p>The AndroidManifest.xml</p>
  
  <pre><code>&lt;uses-sdk
      android:minSdkVersion="8"
      android:targetSdkVersion="15" /&gt;
  </code></pre>
  
  <p>In an Fragment which loads some Data i do a simple:</p>
  
  <pre><code>    getSherlockActivity().setSupportProgressBarIndeterminateVisibility(true);
  </code></pre>
  
  <p>All working great on ICS, but same code running on my 3.1 Tablet never show an ProgressBar when requested. Anyone can give me an hint why this happen ?</p>
  
  <p>I also have the problem in the Emulator running 2.2, no Progress ever shown. I looked again into <strong>FeatureToggles</strong> from the Sherlock Samples, same code, different result :/</p>
  
  <p>PS: Using 4.01 of ActionBar Sherlock</p>