5.0 rc1 adsense block now in Japanese

I run several 4.7 sites with a simple adsense block. They all work fine. I know I could use the adsense module but this block has been doing just what I need.

Testing 5.0 RC1 I added the same block and the adsense comes up in Japanese. I've tried this on a plain install with little or no content and again on one 5.0 rc1 install with my regular content.

Plain install http://dinghy.homelinux.org

with content http://dinghy.homelinux.org/photok12/

The strange thing, is with the content site, the ad will come up in English and then switch to japanese if you visit any of the pages.

Here's the script I'm using in my block:

<script type="text/javascript"><!--
google_ad_client = "blahblahblah";
google_ad_width = 160;
google_ad_height = 600;
google_ad_format = "160x600_as";
google_ad_type = "text_image";
google_ad_channel ="";
google_color_border = "003366";
google_color_bg = "000000";
google_color_link = "FFFFFF";
google_color_url = "FF6600";
google_color_text = "FF6600";
//--></script>
<script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>