this happened to me too. check the pub-id field, it has to be ca-pub-id as far as I remember, not pub-id as they give you the code. you can see in you account how your pub-id has to be for ads and for referrals. let me know if this works.
One of my friends send me a url where I see PSAs in Serbian. I and him have nothing to do with Serbian language. There is something definitely wrong with Adsense and detecting the langualge. I also saw ads in Chinese, but this was local, and when I have uploaded the files to the server they were corrected. And one more thing that comes to my mind is to check your local settings, or the local settings of the server.
Is there anything oriental related about your site - hosting - server? Are the rest of your adsense in english?
I have seen this when the file is on my local server, but once uploaded it seems to be in english. Can you give the url for we can see the page.