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when I go to re-open some of my recent emails they appear completely scrambled and unreadable - esp if from a hotmail account - not all emails are affected.

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Suddenly I find that some of my older emails (within last 2 months) when re-opened are completely scrambled- and may contain snippets seemingly from another email. This seems to esp apply to emails from Hotmail accounts. I recently updated Norton anti-virus - is this the culprit?

Suddenly I find that some of my older emails (within last 2 months) when re-opened are completely scrambled- and may contain snippets seemingly from another email. This seems to esp apply to emails from Hotmail accounts. I recently updated Norton anti-virus - is this the culprit?

Chosen solution

Try to rebuild the index file of the troubled folder. Right-click the folder - Properties - Repair Folder

I recently updated Norton anti-virus - is this the culprit?

That's quite possible. It is therefore recommended not to let anti-virus software scan the Thunderbird profile folder. http://kb.mozillazine.org/Profile_folder_-_Thunderbird

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Chosen Solution

Try to rebuild the index file of the troubled folder. Right-click the folder - Properties - Repair Folder

I recently updated Norton anti-virus - is this the culprit?

That's quite possible. It is therefore recommended not to let anti-virus software scan the Thunderbird profile folder. http://kb.mozillazine.org/Profile_folder_-_Thunderbird