There was the Java and Flash threats that happened a little while ago but was resolved.

Btw, when I said no viruses, I mean I myself and definitely the majority of Mac users don't have to deal with the pains of viruses.
And when I said outperform: I meant outperform with regards to regular app load times and it's solid stability. But like you said your Asus would definitely outperform when it comes to graphic intensive tasks, but no matter how much power you got under the hood you're still running Windows.

My mom has/had Windows 7 hp laptop. About almost a year after her purchase her computer starts buggin out, files seem to be gone (hidden by virus) and constantly slow and crashing. I was not in the mood to fix it myself even though I could have so I tried taken it to best buy-they wanted $200 at least plus more for each virus and issue. I had no choice but to fix it myself........It took me a whole day to make it virus/worm/trojan/spyware free!
After that incident she got a Macbook Air and loves it and believe me she is no computer wiz-still has to call me to figure out how to copy "this or that" to iPod etc, but Mac overall has a simpler interface which greatly helps her and she couldn't be happier.

So.......about this NS Beta......