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I tried firefox 5 but my Tiscali webmail flagged a message that there were unidentified emails so I reverted to FF 4 and this was fine.

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It happens on my laptop with windows 7 and also on my desktop with windows xp. Outlook express on my desktop has no problem.

It happens on my laptop with windows 7 and also on my desktop with windows xp. Outlook express on my desktop has no problem.

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Looks like Tiscalli has some fixin' to do for their Firefox using clients.
http://www.talktalk.co.uk/forums/showthread.php?t=185113#post2452787