A month or so ago a systems update was sent to my software for the Mozilla Thunderbird. It wasn't anything we performed on our end. But ever since then it keeps trying to compact folders, created subfolders within folders, duplicating emails many times over within a folder, some of the duplicate emails have no content, some have the subject line of one email but the content of a different email. It keeps freezing up and has to be rebooted. Or I go to a folder that should lots of emails and nothing displays. It is affecting my job. Right now I have NO access to any of my emails for the last five years. I get the emails from my Gmail account, which I have forwarded to my Thunderbird software because I like the ability to keep everything organized within various folders then subfolder which I cannot do with the basic Gmail software. I only archive my Gmail account for the last six months so I have no backfile there. I have used Thunderbird software for several years and have relied on its organization. But if this doesn't get fixed I might as well retire since I cannot do my job. Our library's IT person can't work on it since it isn't software that the University license. I realize that no one will probably be able to help but I am asking for any guidance I can get.