There’s no real cause for alarm here, but it might be a good talking point (or at least something to be aware of) that Windows 7 is nose and nose with OS X for install numbers, according to stats published by Net Applications. This isn’t really significant in and of itself, as it was sure to happen at some point or another.
The fun part is that both sides can use it as ammunition: “We sold more copies in a month than you’ve sold in ten years!” or “A month later and only 5% have upgraded? Either Windows 7 sucks or you’re all stupid, or both.” Good points all around, guys.
The total share of the net commanded by Windows 7 (and by OS X, as they’re currently tied) is around 5%. Windows in its various forms makes up 95% of web traffic, a statistic I found surprising. Windows’ total proportion has gone up a touch since the 7 launch, but that’ll likely revert soon as redundant installs and such are cannibalized.