Page height fix (clearfix fix)

Sometimes there is no 100% height in html tag (01.png). after html tag it is some white space.
It is because of bug in clearfix hack (http://perishablepress.com/press/2009/12/06/new-clearfix-hack) what uses in \modules\system\system.base.css

place in global.css (or change system.base.css):

.clearfix:after {
  content: "";
}

(originaly it is content: "." in system.base.css)

Thats all =) Sorry for my bad english.
It sticky my footer to bottom of the page.