Found the culprit!

The big piece we discovered before will still pass the earth in a safe distance, yet as this event shows there may be smaller (undiscovered) pieces that share a very very similar orbit, as when small pieces of an asteroid come off these may travel almost the same route for a long long time.

This is only the beginning!!!!!!!!

Those of you who keep saying it has something to do with today's flyby of an asteroid.... that asteroid is still many hours away from Earth.

http://abcnews.go.com/blogs/technology/2013/02/live-blog-asteroid-2012-da14-has-close-call-with-earth/

It was simply another chunk of space rock. There is a lot of them.

I would have to agree that this was probably just coincidental. This same thing actually happened about two hours from where I live in rural Alberta about two years ago. That one landed in the middle of a farmer's field. That one was slightly smaller than this one and burned enough that it was about the size of a suitcase when it hit, from their analysis of the crater size.

With this one, they said it was a shallow, long descent instead of straight down, thus the damage was far less but spread over a wider area.

Here's the lead story on the Christian Science Monitor, one of the first papers I've seen so far with an in-depth article. OP, feel free to add this to the original post if you want.

http://www.csmonitor.com/World/Europe/2013/0215/Meteorite-not-the-end-of-the-world-strikes-Russia-s-Siberia-video?nav=87-frontpage-entryLeadStory

There are new ones?  Forget the stupid space-rock!

While no one was directly hit by the meteor, that anyone was injured by it all is quite incredible.

And THIS is funny... Siberia is just an area of country, nothing terribly special... My father is from Siberia, and I was there several times visiting my Grandma, and I was always amazed why people in the West so afraid of it... ))))

or maybe this...

It was close enough to be disrupted by Earth's tidal forces depending on it's density. For instance, pieces of the Shoemaker-Levy impacted Jupiter over the course of many days, and an asteroid could overcome the distance between that asteroid and Earth in less than one hour.

And I'm not saying it actually has anything to do, in fact I doubt it.... but I also doubt our current capacity of keeping track of everything it goes up there. We kept a close eye on an asteroid of 50 meters and we missed one of 15.