Windows Live OneCare v1.5 Hurrah! At last, Windows Live OneCare 1.5 is now available for free download in 18 countries around the globe. Despite having a dangerous name for anyone with lazy pronunciation, OneCare is finally out of the blocks on its journey towards global availability.

What is it? "All-in-one PC care for people who have other things to think about" according to the site. And it is. I've been testing this on various computers for some time and have been very impressed to date. Give it a whirl from this site.