After installing T-bird 38.1.0 on 3 computers I can't recieve any messages on any of thees computers. "Checking emailserver properties" on the bottomrow its all that happens, no further errormessage.. Sending a mail works, the mail is sent but T-bird has problems when copying to Send-folder, "try again" etc but it dont work. I have W7 on all 3 computers with this problem. On my computer number 4 T-bird is still working, I am still running version 31.7.0 on this computer, and it has the same emailaccounts and settings as the other computers too ... Regards /Olov