I do have a weird red spike on my 5 min ES chart on Esignal that shows a close of 1452.75.......but IB says 1458 close with a high of 1459 this morning. I think Esignal has a bad tick.
PS: I too am a Mary Ann fan....
I also use eSignal as my data vendor (plotted with TS 2000i). My 5 min ES chart shows a high of 1459.0 and a close of 1458 with no 'weird red spike' at the close. I'm sure you've noticed also that the close of yesterday (Thursday 4/5/07) was exactly 1452.75, the same as you indicate as the close of today's abbreviated trading.
Lee Scharpen