I appreciate all your replies, but to be honest, telling me you *haven't* seen/got this issue, is not really much help to me, now is it; that is a bit like someone visiting the doctor with a virus, and the doctor saying: "Well, I don't have this virus, so I can't help you!".
If anyone HAS seen it or got a reasonable explanation, then I'd love to hear from you.
Thanks all the same guys.