If you're running Google adwords you may want to log in and check your accounts as they have done another quality score update overnight. What's rather interesting is SERoundtable has the info but the Official Adwords Blog doesn't mention the issue at all.

On a personal note every time they do an update they mention it will affect only a "small" number of webmasters, however I've been hit by the "quality" update every one of the four updates since 2005. Kind of funny.