Some months ago I had posted a message about how I had some buy orders in above the Ask that didn't get filled by my broker. Another poster challenged me on this and tried to make me look like I was lying about this.
As it turns out, the broker in question uses Penson and was having trouble with Penson that day.
A couple days later I started seeing messages on the Market Makers Games board run by 4kids_9pets about Penson.
This name keeps coming up and yes, I do believe it is having some ripple effects and may serve as a signal to other firms that the days of wholesale rape of these markets are over.