Hi there, I tried to write an eMail with an attachment and Thunderbird did not respond any more. I closed it and tried to restart, but I got the error message that it was in use. I restarted computer twice, but still same message. I then delete file "profile.lock", but still no difference, except that error message doesn't come any more. I am using Windows 7 on an ASUS laptop computer. What can I do to repair the application and keep my eMails? Thanks for you help, Wolfgang Bien