Wordpress and Live writer bug

I had some html code in an entry I am posting in wordpress, I uploaded it using windows live writer, the post contains some html code for iframe tag. The funny thing is after publishing the post, the iframe tag is converted somewhere in the middle to <a> tag

Original post html

&lt;iframe src=&quot;../common/Options.htm&quot; width=&quot;100%&quot; frameborder=&quot;0&quot;
  <br />scrolling=&quot;no&quot;&#160; marginwidth=&quot;1&quot;

  <br />marginheight=&quot;1&quot; height=&quot;100%&quot; name=&quot;CardOptions&quot; allowtransparency=&quot;true&quot;&gt;&lt;/iframe&gt;

 

Posted HTML

<a href="http://../common/Options.htm">http://../common/Options.htm</a></p>