12 hours ago, we couldn't enter adwords base adsense and now i see a google webmaster central as a new interface for webmasters tools.
http://www.google.com/webmasters/

Should get a new ISP. ;)
There was a maintenance for AdSense yesterday, but not sure for AdWords and Base.
http://adsense.blogspot.com/2006/08/maintenance-on-saturday-august-26-at.html