why is Thunderbird so slow on my new computers?
My two new computers (Lenovo PC and HP laptop) both run Windows 8. Thunderbird is extremely slow on both when selecting and deleting messages. Get frequent 'not responding' messages.
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What is your firewall /virus protection?
McAfee Livesafe
Thank you - " Uncheck Email attachments under Real Time Scanning > Settings > Scan these attachments and locations" worked.