I run two screens on my PC. I had two MT4's from different brokers and the problems include: different 00:00 times, different prices by 0 - 5 pips.

Then after much searching and testing I ran two MT4's which 'matched' each other from different brokers. This still had the different prices by 0 - 5 pips.

My solution is to download two MT4's from the same broker. This can only be done by having a Real A/c and a demo in a different name, OR two demo's in different names. This works very well as both MT4's are now identical and data is from the same source. My broker is FXCM and price between my charts and FXCM is only a matter of 1 or 2 pips which is easily handled.

There is no interference between them or any other problem that I can detect. The advantage as I find it, is that I can use one screen for long the term picture and the other for 'fine tune' entry.

Hope this helps a bit...

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Good trading to all...............

fairwind