NEW YORK (MarketWatch) -- Is "all hell" about to break loose? One veteran letter thinks so -- and it predicted the Crash of 2008. Unlike almost everyone else, Arch Crawford's Crawford Perspectives had a fabulous 2008. ( See Jan. 9, 2009, column.) And when I last checked in with it in early 2010, Crawford was predicting a mid-summer massacre ( See Jan. 14 column.) Well? Now, in its monthly issue published in early July, Crawford predicts "ALL HELL BREAKS LOOSE" -- beginning, as a matter of fact, on Monday July 26, 2010. Crawford means it. The letter has been 200%...