So let's put a sock on all those "Don't worry about a thing" stock pundits. I'm officially worried. What seemed to be the makings of a small recovery early this morning - thanks to a strong GDP report - turned pretty nasty in the last few hours of trading. The Dow finished down 211 points, which puts it within reach of 13,000. Once more the culprit were those pesky debt markets. And if you want to start your weekend on a really high note, consider the Hindenburg Omen, which is what a few gloom-and-doomers are starting to evoke. The HO occurs when lots of stocks make new lows, while the indexes make new highs (sound familiar?). The omen has occurred at least eight times over the past six weeks. “A single signal is not consequential, but when several signals occur within a short period of time, the odds for a meaningful decline, usually 5 percent, within the following two months are high,” writes Barron’s Michael Kahn. Is it cocktail hour yet? (Marketbeat)