My Thunderbird email process sometimes shows up as thunderbird.exe, and other times as thunde~1.exe. Tunderbird sometimes refuses to send mail because McAfee port blocking thinks that the email may be a worm. I can manually add thunde~1.exe to the exclusions list, and thunderbird.exe is there by default. An update sometimes removes the thunde~1, and I have to re-enter it. Is this list on the computer, or is the list replaced in the update? If on the computer, where can I edit it permanently?