Seems good... but unfortunately requires IE.
Not really a problem as the tool checks Windows for possibly insecure Windows applications using an integral Windows program.
I kinda like the way Ubuntu checks every morning for new updates while I'm drinking my Assam with milk and sugar, and it doesn't need IE.
my windows xp sp2 is fully patch
Nowadays, malware looks for non-MS applications to exploit, for example Sun Java and Quicktime.
Computer users need an easy way to check everything is up-to-date on their PC: for Windows users, that means more than MS, which is why the Secunia and F-Secure tools are so valuable.