I had a similar problem where the GMT time in the top right corner of the dukas platform was wrong after my desktop pc was in sleep mode, this rarely happens I can add. (possibly only noticed it twice in 100 wakes from sleep)
I didnt note how far out the time was, but I placed a trade and added a time validity (maybe it was 1 hour) for the trade and it opened and closed the trade within seconds of each other so I lost the spread and commission costs for no chance of making profit, im guessing due to this same problem.
My conclusion is: since the platform seems to calculate the time valid from the 1 hour I entered and added to the "current" time (which was wrong)... I think you can see how this could have happened.
Quite a bug.!In addition when I wake the computer from standby some charts will have missing bars that wont re-fill, half may re-fill the missing bars over the first 2 mins of being reconnected, the rest wont re-fill at all, this is a bit random which charts wont re-fill though.
Similarly the only way to fix is to close the platform and login again. (though restarting didnt get my spread and commissions back for some reason

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Im usually using jforex on windows 7