Nothing significant, but curious - IB TWS is showing different prints for LEH closing then all other brokers... IB showing 25.82 with think or swim/etrade/scottrade showing 25.81. Like I said nothing big but why would this be, maybe the sample data instead of ticks?
Well their options quotes and fills are very tricky. It seems that somehow they always get a penny or 2 off of your entry or exit. It's not always true but close to half of the time, in my opinion, they get a little nibble. People that regularly trade SPY options with them got to know what I mean.