Try this, if it's any smoother. ;P
I've now been thinking that I'm working on the same one over and over again, so I thought of something new. Try these; Ones a bigger version, and ones smaller.
Version 1.
Version 2.
It's released via Automatic Updates, make sure it is on.
If it is and your recieving notthing, thats because it can mess your computer up so they've disabled it for computers like that until they fix it. Try visiting http://update.microsoft.com/
There are several which scan your computer online, but I would recommend you DOWNLOAD an anti-virus. If you download it can defend you in millions of ways websites can't.
Sorry if this is a little off topic, but I just wanted to express my words.