Not sure what they mean when they say "Investors gave an unexpectedly cool response to a $24 billion auction of 5-year Treasury notes"

Sounds like they sold the bonds but not at the expected price.

Later

Early Rally Fizzles After Weak Government Debt Auction- AP

Stocks lost ground after a weak auction of U.S. government debt stirred worries about how easily Washington will be able to raise money to fund its economic rescue program. Investors gave an unexpectedly cool response to a $24 billion auction of 5-year Treasury notes, which also sent prices for Treasurys lower.