Toxic Mega-Stock Shock!

Has anybody noticed the abrupt downward spiral in the stock markets that has been occurring over the past several minutes? It looks like the DJIA will eventually slide toward a loss in excess of 900 points shortly, if not already striking that low level.

Is this that market correction that the bears have been indicating, or is this the start of the Greece-driven market disapproval, or is this some sort terrorist strike against the world’s financial markets?