This is actually Window' bug, not application. Windows 7 is the worst. When there are several windows with top-most attribute (desktop contacts + a video player, tested with KMP), and one of them being closed and reopened several times, desktop contacts (and any other top-most windows) will loose their top-most ability until they been manually clicked or closed/reopened. On Windows XP it seems to be little less buggy.
Over a year I've started
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