Version: 1.12.4 (using 4.3.4 (KDE 4.3.4), Debian packages) Compiler: cc OS: Linux (x86_64) release 2.6.33-ck1 I leave my home desktop permanently open with kmail running connecting to my IMAP server (imap-2004). I remotely connect to the same imap server with a laptop or otherwise. After coming back to my desktop, I am unable to refresh the email from the imap server without quitting kmail and restarting it. Clicking on check mail, refresh and so on will fail to ever refresh, and then if I click on any emails in the inbox, they simply disappear. Restarting kmail is the only way to fix it. After restarting, all is well again.
A recent dist-upgrade on debian testing got me a kmail 4.4.5 and I can confirm this bug is still present.
Thank you for taking the time to file a bug report. KMail2 was released in 2011, and the entire code base went through significant changes. We are currently in the process of porting to Qt5 and KF5. It is unlikely that these bugs are still valid in KMail2. We welcome you to try out KMail 2 with the KDE 4.14 release and give your feedback.