Gavin - couldn't wait for what? I was intrigued by Windows 7, but I didn't realize that MS was still busy patching root-level vulnerabilities as recently as October. It's insane that this type of exploit is still possible, after all these years of Windows Security Updates. They need to rewrite their OS from the ground up, with a UNIX core, as I've stated before it is the only true "fix." Windows 7 has a great UI and is very responsive, but it simply cannot be trusted as a platform for any kind of remotely serious use, since at its core is the same underlying, single-user, moronic subsystem as all other Windows NT variants.
The Safari issue you link to is not even a confirmed security hole - at best, it is a potential vulnerability not known to have been exploited. Incidentally, I use FireFox as my default browser, whether I'm on a Mac, Windows, or Linux system, so I wouldn't even be vulnerable to this, even if it's a real issue.
That is far different than millions of Windows boxes getting infected with a worm in a day!!!
I'm not here to market Apple - in fact I have been disgusted with them since 2006. They simply make the best OS currently available - all they need to do now is support third party hardware officially with Mac OS X, and stop trying to rope people into their overpriced, underpowered, poorly made machines.