I made a new site and put some adsense ads on it, and they showed up fine for around 6 days and after that they just disapeared off the page.

its a chat site and there are no stop words on the page.

can anyone think of a reason for the ads not showing?

you should check with few different browsers and isps, sometimes it does happen due to region and loction ads dont come up, or possibly too many keywords

I think you should contact google about the problem however it’s also important to ensure that you've not clicked on it accidentally or by mistake, if so it should be informed to them, hopefully it might be resolved soon.

thanks guys , but the ads are now showing ok. i think maybe it was too many keywords. as i have removed some text from the page and now its ok.

it happens sometimes, what will be bad is when a ERROR page or something shows up where adsense should be, that means your domain has been banned.

Well if your chatroom is java, this can sometimes cause a problem.

Make sure you check all the basic stuff such as a empty text box covering the area.

Also looking at your code could help, something could be pushing it out the way.