I have just begun to use Google Adsense on my site today (a vbulletin forum), but I keep getting ads in French and other such languages.

My site only contains english, but it appears to be targeting other languages and foreign non-english speaking sites to my discussions.

Has anyone ever experienced this?
I can't find a language setting in the webmaster tools for adsense, so I can't even make it stop

Any help or insight is appreciated!