1) Many things happened between 2000-2007. The rise of the Euro gave investors/banks throughout the world much more confidence in bringing into Europe. European countries utilized such confidence/higher credit rating by printing money, selling and buying debt- much like the US had done for the previous decades (minus the buying of debt part). However, not all European countries had the tax base and economic growth to sustain such debts, as the global currency market overrules all governments. Also, much of Europe's real growth has been mainly centered in Germany, due to it's premiere education standards, relatively reasonable fiscal practices, and elite manufacturing base. Much of southern Europe does not have such things, and currency traders are calling "bullshit" on their debt.
2) There have been/currently are multiple bubbles at play. The US housing bubble is different from European nation debt bubbles, US state debt bubbles, and the US federal debt bubble. The foundations of the former were laid in the 90s, encouraged by the US federal government and many state governments (California, Arizona, Nevada, and Florida in particular) and later exacerbated by the US and global financial industry and credit agencies. The facing of the government debt bubbles were accelerated by the US housing bubble. Such debt was never going to be forgotten, as the rest of the world is not going to allow the US and Europe (and Japan) to just print money without any repercussions.
3) Even though my previous may not have made this apparent, but I do not view "capitalism" or "socialism" in the ideological sense that many on GAF do. Those kinds of views should been left in the high school civics class. The modern economies in this world have many complex mechanisms, which defining them en masse as either "capitalism" or "socialism" is a useless exercise. "Free market capitalism" didn't fail anything- it's simply a term to generally describe people buying and selling goods and a specialization of labor. A lot people made a lot of bad decisions which led up to the US housing bubble bursting. In the end, it gave us an important lesson: do not use the housing market as the main source for economic growth- which some still haven't learned.
4) I never said all of our economic problems started with Obama. However, I will say the Obama administration has done the wrong things to achieve meaningful economic growth. Obama himself is a poor leader and his indecisiveness has created much uncertainty within the US markets- prolonging economic stagnation.