I am on a MacBookAir - Yosemite latest version, T-Bird latest version. I also have a MacMini desktop running snow leopard. When I go to delete trash or junk I get "Server at xx@bethterry.com has disconnected." Both of these computers show the same error messages when I try to delete trash or spam. It's intermittent but has increased over time. It happens whether or not I have both computers logged in or just one computer logged in. A new problem has cropped up when I'm writing an email, it will stop me with a message that it can't save the message to drafts. When I hit the send button, it gives me a message that it can't save the message to the Sent folder. This started happening when I upgraded two upgrades ago in December. Here are a few of the error console messages (which are Martian to me, so maybe you'll be able to translate!) I see Chrome referenced there a lot. I don't EVER use Chrome. I have 9 user names on this account. Is that the problem? I also haven't figured out how to move old messages to my backup drive and delete them from the server, so there are three users with more than 1,000 messages hanging in there. If either of the above are causing the problem, please let me know how to move the files. I understand how to do that with POP, but not IMAP. thank you. Timestamp: 2/27/15, 11:44:52 AM Warning: mutating the [[Prototype]] of an object will cause your code to run very slowly; instead create the object with the correct initial [[Prototype]] value using Object.create Source File: resource://gre/components/steelApplication.js Line: 783 Timestamp: 2/27/15, 11:44:53 AM Warning: Unknown property 'padding-start'. Declaration dropped. Source File: https://mozorg.cdn.mozilla.net/media/css/thunderbird-start-bundle.2e0edff01be0.css Line: 1, Column: 2922 Source Code: Please email me for this if you need it. I think it's too long to include all of these. I did post some of this in the mozillazine forum as well http://forums.mozillazine.org/viewtopic.php?f=39&t=2904791 Timestamp: 2/27/15, 11:44:53 AM Warning: Unknown property 'margin-end'. Declaration dropped. Source File: https://mozorg.cdn.mozilla.net/media/css/thunderbird-start-bundle.2e0edff01be0.css Line: 1, Column: 3078 Source Code: @font-face{font-family:'Open Sans Light';src:url("/media/fonts/OpenSans-Light-webfont.804037562eab.eot?#iefix") format('embedded-opentype'),url("/media/fonts/OpenSans-Light-webfont.963eb3290774.woff") format('woff'),url("/media/fonts/OpenSans-Light-webfont.ecb4572a5e47.ttf") format('truetype');font-weight:normal;font-style:normal}@font-face{font-family:'Open Sans Light';src:url("/media/fonts/OpenSans-Semibold-webfont.0ea045029306.eot?#iefix") format('embedded-opentype'),url("/media/fonts/OpenSans-Semibold-webfont.56bfcae65300.woff") format('woff'),url("/media/fonts/OpenSans-Semibold-webfont.b5a0ae86dca8.ttf") format('truetype');font-weight:bold;font-style:normal}@font-face{font-family:'Open Sans Light';src:url("/media/fonts/OpenSans-LightItalic-webfont.6725fc490942.eot?#iefix") 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h2.iconic:before{display:block;position:absolute;top:0;background-image:url("/media/img/thunderbird/start/sprite.23eaf0044898.png");background-repeat:no-repeat;content:''}footer a{display:inline-block;-moz-padding-start:25px;padding-start:25px}footer a:before{-moz-margin-start:-25px;margin-start:-25px}footer a:before,section a.iconic:before{display:inline-block;-moz-margin-end:5px;margin-end:5px;width:20px;height:20px;background-image:url("/media/img/thunderbird/start/sprite.23eaf0044898.png");background-repeat:no-repeat;vertical-align:text-bottom;content:''}header h1{box-sizing:padding-box;font-size:1.25rem;line-height:1}header h1:before{height:100px}header h1 span{display:block;color:#2666a6;font-size:3rem;letter-spacing:-0.1ex}section h2{font-size:1.25rem;line-height:1.3}section h2.iconic{display:table-cell;-moz-padding-start:55px;padding-start:55px;height:50px;vertical-align:middle}section h2:before{width:50px;height:50px}section.tip h2:before{background-position:0 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h2.iconic:before{right:0}@media(min-width:1024px){footer li{width:50%;min-width:10em}[lang|="en"] footer li{width:33%}}@media(min-width:800px) and (max-width:1023px){footer li{width:50%}}@media(min-width:800px){main>header,main>div,main>footer{width:50%}[dir="ltr"] main>header,[dir="ltr"] main>div:last-of-type,[dir="ltr"] main>footer,[dir="ltr"] main>footer li{float:left}[dir="ltr"] main>div:first-of-type{float:right}[dir="rtl"] main>header,[dir="rtl"] main>div:last-of-type,[dir="rtl"] main>footer,[dir="rtl"] main>footer li{float:right} Timestamp: 2/27/15, 11:44:53 AM Warning: Unknown property 'padding-start'. Declaration dropped. Source File: https://mozorg.cdn.mozilla.net/media/css/thunderbird-start-bundle.2e0edff01be0.css Line: 2, Column: 490 Source Code: [dir="rtl"] main>div:first-of-type{float:left}}@media(min-width:640px) and (max-width:799px){header,section{width:70%}footer{position:absolute;top:120px;width:30%}[dir="ltr"] footer{right:0}[dir="rtl"] footer{left:0}}@media(min-width:480px) and (max-width:639px){footer li{width:50%;min-width:10em}[lang|="en"] footer li{width:33%}[dir="ltr"] footer li{float:left}[dir="rtl"] footer li{float:right}}@media(min-width:480px){header h1{display:table-cell;-moz-padding-start:110px;padding-start:110px;height:100px;vertical-align:middle}header h1:before{width:100px}}@media(max-width:479px){header h1{padding-top:110px;text-align:center}header h1:before{width:100%;background-position:center top}} Timestamp: 2/27/15, 12:03:25 PM Warning: Error in parsing value for 'min-width'. Declaration dropped. Source File: about:blank Line: 4, Column: 15 Source Code: * { min-width: auto } body[fix] #master {