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I'm logging on using the same account, etc. There are similar issues with other sites as well as this one.
Just for the record, I'm using Windows Vista on my laptop with IE9 and windows XP on my PC with IE8 (I'm fairly sure IE9 isn't available for Windows XP).
I can't understand why things have suddenly changed, 'cos I haven't done anything drastic recently. The only thing I've done recently is install Nokia Suite onto my PC for my mobile phone.
The next time I'm on my PC, I'm gonna log on here with firefox and see what happens ....