Very likely not! But President Obama won't rule out sabotage as the cause of yesterday's stock market plunge. Please let it be bored Chinese high school hackers and not systemic instability produced by out-of-control computer trading! [The Hill, photo via]

Today marks the second day of Wall Street jitters, with the Dow Jones Industrial Average dropping 350 points this morning before rebounding somewhat this afternoon. It doesn't compare to the freakout that unfolded yesterday, though.