I think it may be zinging too fast for all of us! Look at all the double posts - even treble ones today!!
David, it happened to me because I sent a comment, then the WW page went blank (white) and remained so for ages....so I went back and ended up sending it again, only to them discover the first time it HAD been registered. Not sure if this is the same for everyone, but there certainly seem to be more doubles that usual!

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tc

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And I think Inni's got a world record there now!!