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This final note today, in which S&P beats up on Warren Buffet. The billionaire went on CNBC this morning, said he wasn't worried at all about the debt downgrade and said, in fact, that the downgrade changed his opinion of S&P -- not his opinion of U.S. Treasuries.

Funnily enough, couple of hours later, S&P put Buffett's company Berkshire Hathaway on notice for a possible downgrade.

Hmmm.

Also, we should note here: Berkshire Hathaway's the single biggest shareholder in S&P's competitor, Moody's.

Follow Kai Ryssdal at @kairyssdal