Server disconnects when trying to delete trash or junk

Question

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 [email protected] 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
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Source File: resource://gre/components/steelApplication.js
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Timestamp: 2/27/15, 11:44:53 AM
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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
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Timestamp: 2/27/15, 11:44:53 AM
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Source Code:
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Timestamp: 2/27/15, 12:03:25 PM
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Source File: about:blank
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Source Code:
* { min-width: auto } body[fix] #master {

Answer 1

Went to the Apple Genius today.  He did the same thing I did before.  Cleaned out the system and restored with IOS8 as if it were a new iPad.  Installed a number of apps and they worked fine at the store.  Came home and restored  from my back up.  Found out that all pages would delete  except page 3.  The Genius told me that, if the problem continues, its in the processor and would require a replacement for $299.  I have about 60 apps on my iPad.  Up until I installed IOS8 there were no problems.  Now I have this delete problem in addition to my email freezing every few days.  My feeling is that the problem is with IOS8 and the fact that iPad 3 cannot handle it for some reason.  Apple doesn't want to admit that because they would be responsible for fixing your iPad since they told you to install IOS8.  For the time being I will solve my problem by sliding an app off of page 3 if I want to delete it.  Eventually I will upgrade but this is not enough of a problem to make me spend the money for a new iPad.