I@m guessing it has more to do with preventing ppl pumpellign the server with too many requests and preventing the rest of the customers from getting theirs in. Standard DoS attacks (why anywoudl would bother doign that is beyond me). As scorpion pointed out a while ago, there is a built -in lock in the mt3api which prevents orders from being fired off in quick sucession. This block is countered by spwaning off another app to fired off another request. With MT4, it seems they'll be stopping this at the source by terminiating accounts which do this, another reason why they've discontinued the client api perhaps. I'm just hoping that what the fxdd rep told scorpion is accurate, that they'll be allowing the use of the api with mt4, then I'll be switching to them. I've put far too much time into my app as I'm sure scorpion has done already with his to let something stupid liek this stop me from making money