String.Format doesn't work as expected
<p>Maybe its my machine, but this doesn't make any sense.  </p>

<p><code>String.Format</code> doesn't work.  These two should technically equal, but do not.  What's missing?  I'm using ASP.NET 3.5 on Windows 7.</p>

<pre><code> string.Format("{0};{1};{2};{3};{4};{5};{7};{8};{9}"
                  , "711.01"
                  , "711.01"
                  , "711.01"
                  , "136.74"
                  , "136.74"
                  , "136.74"
                  , "136.74"
                  , "711.01"
                  , "711.01"
                  , "711.02 br ");

 //and
string.Join(";"
                  , new[]{"711.01"
                  , "711.01"
                  , "711.01"
                  , "136.74"
                  , "136.74"
                  , "136.74"
                  , "136.74"
                  , "711.01"
                  , "711.01"
                  , "711.02"}); 
</code></pre>
