Quote from osorico:
Since both GLOBEX (CME) and eCBOT (CBOT) both accept stops and stoplimits, why does IB simulate these order types for one or both of these exchanges? It's no different than the "lesser" firms.
That's the point. 
Do you have a link indicating IB simulating orders are held on IB servers vs the users local machine?
What are you talking about ? One of the links that you posted lists the following exchanges as ones where NATIVE stop orders are used
CBOT, CFE, CME, DTB, E-CBOT, EUREX US, FWB, IBIS, IDEM, ISE, Soffex, SWB, SWX, VIRTX
http://www.interactivebrokers.com/en/trading/orders/stop.php
There are a couple of cases where it appears that simulated orders are being used when native ones may be available. If you are so concerned why don't you ask IB about it ? There may be a good reason why it is so.
It is a fact that simulated orders are held on IBs servers. This is easily demonstrated by placing any sort of non-marketable order, closing down TWS and then restarting. Your order will appear on the pending page. If you think that there is some trickery going on and orders are being stored in a file, then try logging on using another PC. The result will be the same.
Like a previous poster, I'm sick of these utterly uninformed 'IB sucks' posts. If there really are issues I, and I'm sure many IB clients, would love to hear about them. But most of the time it's just nonsense.