problems with channels

Hi!

I have a problems with channels. If I set/fill channels in adsense module, I can't see any report from channels. Nothing.
Reports about earnings are ok.

I tried to look at adsense code, and the code generated by adsense module has (nicely) name of channel in google_ad_channel
e.g.

google_ad_channel = "na_konci_clanku";

but adsense channel code generated by google adsense page is:

//2007-06-27: na_konci_clanku
google_ad_channel = "9973263959";

So, I think that there can be reason why google adsense ignore channel name from adsense module code.
I added full source of adsense script

--- code generated by adsense module ---

<script type="text/javascript"><!--
google_ad_client = "ca-pub-0118991728808299";
google_ad_type = "text";
google_ad_channel = "na_konci_clanku";
google_ad_width = 336;
google_ad_height = 280;
google_ad_format = "336x280_as";
google_color_border = "f9d893";
google_color_bg = "FFE6BF";
google_color_link = "880000";
google_color_url = "880000";
google_color_text = "000000";
//--></script>
<script type="text/javascript"
 src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>

--- code generated by google adsense page ---

<script type="text/javascript"><!--
google_ad_client = "ca-pub-0118991728808299";
google_ad_type = "text";
google_ad_channel = "na_konci_clanku";
google_ad_width = 336;
google_ad_height = 280;
google_ad_format = "336x280_as";
google_color_border = "f9d893";
google_color_bg = "FFE6BF";
google_color_link = "880000";
google_color_url = "880000";
google_color_text = "000000";
//--></script>
<script type="text/javascript"
 src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>