A Quotes & a Stock Market Graph

That urgent push—"panic" is such an ugly word—to involve every single employee in acquiring and retaining customer also shows signs of driving down.
Kim S Nash, CIO, December 15, 2010, p34.

I thought this was an interesting graph.

The market's previous close was somewhat below 12,100.  The market is up 40 points.  Simple math says that something less than 12,100 + 40 should be something less than12,150, but look at the graph from finance.yahoo.com on February 8, 2011 about a little after 1 PM.

Ummm and then in the process of putting up this post I realized that I was looking at the previous day's graph.  Yahoo! hadn't  updated the image.  Is it odd that I expected the graph to be update without refreshing the screen myself?  It definitely was not odd that I would be so oblivious.  As I write (and finish my lunch in case anyone wonders if I'm slacking off at work), this is the current graph:

I'm guessing that the Dow text is updated continuously, but the graph isn't.  The 40 points shown in the first image represented the gain from the previous close near 12,160.

No mystery solved.