Blocked Adsense Account

I just received an email from Adsense which states - 'we found that your Adsense account has posed a significant risk to our Adwords advertisers'


At first I thought it will only disable the ads, but much worst, I can't log in to my Adsense account. I'm not sure what happened but it seems I did something wrong.

Maybe I'll just wait until the ads show again.

For more info, visit this site:

https://www.google.com/adsense/support/bin/answer.py?answer=57153&sourceid=aso&subid=ww-ww-et-asui&medium=link