March 25, 2013, 2:05 PM Well, it looks like it might be bye-bye record-day for the S&P 500 again. Ever since the Dow broke its Oct. 2007 closing high earlier in the month, the S&P 500 SPX -0.39% has been torturing investors by dangling the prospect of breaking its all-time highs (closing: 1565.15 hit on October 9, 2007;…