Hello, I copied the .thunderbird folder to another folder on my computer (Ubuntu on Dell Laptop) for backing up, re-opened Thunderbird: accounts all gone; asking me to set up an email account. I have deleted the duplicate folder but the accounts are still gone when I restart (original .thunderbird folder still in original location)! I have tried using profile manager to find/reactivate the profile as suggested on online support page (creating a profile with my name instead of the random.default profile) - but this didn't work. I am reasonably computer-literate but not a developer/programer so normal language would be appreciated! Thanks. Adrian