Google Adsense block is empty

[Endlesskiss]

Well, I've added a google adsense code to my page and there is no image on that post.

Code:

<!-- ad code -->
<if condition="!$GLOBALS['FIRSTPOSTID']">
 <br>
<table id="post$post[postid]" class="tborder" cellpadding="$stylevar[cellpadding]" 
cellspacing="0" border="0" width="100%" align="center">
<tr>
    <td class="thead" style="font-weight:normal; border: $stylevar[cellspacing]px solid $stylevar[tborder_bgcolor]" colspan="2">        
        Sponsored Links
    </td>
</tr>
<tr>
    <td class="alt2" style="border: $stylevar[cellspacing]px solid $stylevar[tborder_bgcolor]; border-top: 0px">
<center>
<script type="text/javascript"><!--
google_ad_client = "pub-7206752966515575";
/* 468x60, נוצר 20/02/10 */
google_ad_slot = "5140384232";
google_ad_width = 468;
google_ad_height = 60;
//-->
</script>
<script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>
</center>
    </td>
</tr>
</table> 
</if>
<!-- end ad code -->

There is a table below the first post of every thread, however, there is no image...

It happens for every ad I place on my site, except the first one below the navbar.

Can anyone help me to solve that issue?

Waiting for an answer,
Adam.

[Vibhor]

If you have generated the code just now, It'll take few minutes for the ads to appear.

Cheers.

[Endlesskiss]

I just noticed it says 10 minutes, However I've been waiting for an hour and still the ad-box is empty...


EDIT:

After playing with the templates a while, I understood that I can have only 1 ad on my board, by disabling the header ad the "firstpost" ad works, and the same for the footer ad.

Why the hell is that?