Monday, June 2nd, my providers mail service crashed and my account that I use through Thunderbird went blank. After 2 days my mail service is back up except everytime I click on the icon to bring it up it asks for my pass word. It has never done this before. I went to tools > options > passwords and found that the particular "imap" to this email address was missing. The "smap" was there with the correct password. I went through some of the account settings and now instead of showing "imap" it shows "mailbox" with the proper pass word, but I still get the password request before connecting is done.