Version:           1.9.1 (using KDE 3.5.1 Level "a" , SUSE 10.1)
Compiler:          Target: i586-suse-linux
OS:                Linux (i686) release 2.6.16-rc6-git1-4-smp

Comparable to: Bug 48560

This is definitely not fixed in the version I use (KDE 3.5.1 from SuSE 10.1 Beta 8). I'm using IMAP (not cachedimap) with my 1&1 e-mail account. Their servers are really strange, broken and slow (I'm actually surprised, that kmail did not lose mails or crash when working with my account this time ;)), but this does not happen in Mozilla Thunderbird or other mail clients.

The exact problem is: I look at the message list, everything looks correct. I click on a mail where the senders name in the header is in quotation marks (e.g.: From: "amazon.de" <promotion5@amazon.de>). Now when kmail loads the mail from the server, the senders name is shown like this: \"amazon.de\" in the message list. The senders name remains backslash-quoted, until I select another mail in the list - it is then immediately shown as amazon.de (correctly without any quotes) again. I can get more than just one mail in the list to be shown with escaped quotes by clicking very fast through the list, so kmail can't keep up.