I opened my e-mail client this morning and got a warning message about changing my security certificate when I didn't do anything to the settings. I contacted my computer folks at BASK/ITOK to see if there was a virus causing the problem with my e-mail. I clicked on cancel, accept, or close and the pop-up keeps reappearing. The tech spent 4 hours searching for a problem on my computer and determined that the error message is generated by you folks as I use thunderbird as my e-mail client. The tech also advised that a hard reboot of the client may fix the problem, but that I would lose all of my sent e-mails and the messages currently in the inbox. I contacted you earlier in regards to deletion of open e-mails in my inbox without my prompting and without warning. Can you help?