Problem with pre tag

Hello everybody,
First, thank you for CKeditor, I love this editor !

My problem :

I have a problem with pre tag.

When I write this code :

<pre class="brush:xml;" title="">
<object data="playerMP3.swf" height="60" type="application/x-shockwave-flash" width="270"><param name="movie" value="playerMP3.swf" /><param name="wmode" value="transparent" /></object>
</pre>

This code is entering in my DB properly, but when I edit the text I have the following code :

<pre class="brush:xml;" title=""></pre> 
<object data="playerMP3.swf" height="60" type="application/x-shockwave-flash" width="270"><param name="movie" value="playerMP3.swf" /><param name="wmode" value="transparent" /></object>

the </pre> move on top.

Idem when I write this code :

<pre class="brush:xml;" title="">
&lt;object data=&quot;playerMP3.swf&quot; height=&quot;60&quot; type=&quot;application/x-shockwave-flash&quot; width=&quot;270&quot;&gt;&lt;param name=&quot;movie&quot; value=&quot;playerMP3.swf&quot; /&gt;&lt;param name=&quot;wmode&quot; value=&quot;transparent&quot; /&gt;&lt;/object&gt;
</pre>

This code is entering in my DB properly, but when I edit the text I have the following code :

<pre class="brush:xml;" title=""></pre> 
<object data="playerMP3.swf" height="60" type="application/x-shockwave-flash" width="270"><param name="movie" value="playerMP3.swf" /><param name="wmode" value="transparent" /></object>

</pre> moving on top and code become real html

Another question : Is there a way for ckeditor does not "change" the code ?

I read many thread on this forum but i have no response.

Could you please help me please ?

Thank you in advance

Regards,
Tutomania