Would love to, but Yahoo told us to hang off publishing their IMAP server settings until they were further along with the release to allow testing. That was about three years ago. They still have not got back to say ok, go now. I think the IMAP stuff has been out there about two years now, so our track record on achieving anything with Yahoo is not good. But I think your right. Yahoo are doing a cheap job for everyone and the paper over the cracks is peeling. I have just been reading some of the chatter in the web and I think it is entirely possible this is an anti virus issue. Especially if your anti virus ( or some other program) is [http://en.wikipedia.org/wiki/Password_manager holding your passwords]. Programs such as [https://identitysafe.norton.com/ Nortons password vault], [http://keepass.info/ KeePass ], [https://lastpass.com/ LastPass ] and [http://www.kaspersky.com/password-manager Kaspersky Password Manager] among others could all be implicated in the issue. Restart the computer in '''[http://en.wikipedia.org/wiki/Safe_mode safe mode with Networking]'''. This loads only the very basics needed to start your computer while enabling an Internet connection. Click on your operating system for instructions on how to start in safe mode: [http://windows.microsoft.com/en-us/windows-8/windows-startup-settings-including-safe-mode Windows 8], [http://windows.microsoft.com/en-us/windows/start-computer-safe-mode#start-computer-safe-mode=windows-7 Windows 7], [http://windows.microsoft.com/en-us/windows/start-computer-safe-mode#start-computer-safe-mode=windows-vista Windows Vista], [http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/boot_failsafe.mspx?mfr=true" Windows XP], [http://support.apple.com/kb/ht1564 OSX]