I've been using OneCare now for around three years. I decided that if anyone would know how to protect the Windows operating system, it should be Microsoft.
When I was selected to take part in the Windows 7 beta, I was disappointed to find out that OneCare did not support Windows 7 and Microsoft were retiring it later this year.
Updates will continue through 2010 but the product itself is being phased out with a new free antivirus system from Microsoft on the way. Please be aware when purchasing this that it will not work with Windows 7 and that it has a limited lifespan.