Hi there, I'm having a problem with Thunderbird that suddenly started happening last week. I open it up and everything is fine, minimise the program to do something else and when I go back to it suddenly all emails from the last couple of months are no longer displayed. They will then reappear in the inbox after 5-10 minutes, but without any of the tags I've assigned. The email account is with Yahoo and is set up as IMAP. This is extremely infuriating because it is a business email account and I need to keep track of what's been replied to etc. Any hints on what might be causing this to happen would be greatly appreciated! Thanks.