Strange - running for months then this happened. Nothing had altered in settings - ie; cookies keep until "They Expire" has always been selected also "Clear History when Firefox closes"- settings - "Cookies" and "Active Log-In were both unticked as always. Then went to "Accept Cookies from Sites" - Exceptions - removed the PCA Cookie and then reinstated it using "Allow"
Back to normal - these things are sent to try us ! Thanks to above for replies.
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