Why am I getting ads in German?

Site is English

[Buford]

Since this morning I've noticed that a large portion of my ads are showing up in German - correctly targeted as far as topic is concerned, but have "Goooooogle-Anzeigen" along the top. There is no German in the pages, and I'm on a US IP. What could be causing this?

[cyberair]

I can confirm that it happened to me this morning when visiting a site with all spanish. I am in a spanish IP, however German ads were showing.

[rhuseinh]

Same here since about 10 hours ago. Site mostly in English.

[europeforvisitors]

Glitches happen. I see this sort of thing from time to time on my own site, but the problem never lasts long.

[DavidDeprice]

I had (have) ads in French, Italian and German occasionally. they'll go away, because noboby will click them, and Google will automatically readjust.

[wheelie34]

on sunday i had either japanese or chinese, the ads by (jap/chine writing) and the advert in english, pointing to a .co.uk domain and when mouse overed the status bar had 3 to 5 square blocks before the url of the ad, the blocks are the type of thing if you see a carriage return in a piece of perl code, or when you dont have the character map on your pc to view a foreign language email, todat had the german ones with german advert text too

[jchampliaud]

I have a site about France and every now and then I get ads in French.

[diamondgrl]

Ich habe keine Ahnung!

[xxxxxpp]

I have had spanish ads on my homepage now and then. But I don't think they do much harm, they didn't had any impact on earnings or CTR. perhaps because not everyone visiting the site sees those ads, some might see others.
So I think there's no need to panic.