I had this problem ... — It is a result of a java bug (http://bugs.sun.com/view_bug.do?bug_id=6967414) which still has not been resolved. If you stay on java 1.6 update 18 you will be fine. (the bug only affects java 1.6 update 19 and above)

ECN is pratically impossible — I disagree there's full ECN and absolute STP on Metatrader because there service is designed for the broker to mark up the PIPs and take positions on their users. Doesn't matter if you're a good trader, I ...

Make sure it's STP — Remember that Metatrader does not hedge out your trade on an ECN. Make sure they are a true ECN. And Viking is fine, but what you really need to know is whether you're getting the Currenex pricing engine underneath it. Ask ...

MB Trading MT4 is not STP — Stick with Currenex and Viking ... MB Trading MT4 is crap because they manipulate prices to stop you out. You need a straight through hedging system that most Currenex white labels do....