I wonder if anyone who made a trade on any of the affected Blue Chips yesterday will question the legality of mis-pricing trades due to computer malfunction. And, whether they'll request trade reversals or some such.

The DOW fell yesterday ranging at times from 200 to almost 600 full points in negative value. The administrative bodies of the exchanges now claim it was a result of switching over to a backup system, after seeing large trade volumes (likely as a result of falling Chinese markets the night before).