So I'm in the cockpit of a Bombardier CRJ700 making my final approach into Heathrow. I'm about ten miles away from the airport, the flaps are at 45, my speed is around 150-160 knots, and I'm gently banking and lining-up with the centre of the runway. Everything is good.

I'm playing Flight Simulator X, in case you're wondering.

Now the computer I'm using isn't my normal computer. It isn't too bad, but it isn't too brilliant either. But it's smooth enough for Flight Simulator, which is what you want.

Suddenly, just as I'm just aligned with the runway, the frame rate drops horribly to what I guess is about 10 FPS. Not good when you're flying a plane. I can't react as quickly to the plane's descent as I need to, and I end up touching down short of the runway. After flying for half-an-hour, I mess up my landing just because of the computer slowing down.

And what caused the slow down? McAfee decided, just at that moment and without asking me, that it would do a full scan of the computer. Son of a glitch.

No, I don't want to renew my subscription. No, I don't want to do a full scan right now. No, I don't care if you've been disabled. No, I don't care if 1 item is currently affecting my status. Just get the smurf off my computer!

...

*takes deep breath*

So what anti-virus program do you use? I don't use any.