Setting the option to "Show system tray icon" in 'Settings > Configure > Behavior > System Tray' solves this issue for me. I can now close all Kopete windows and then reopen them from the message indicator, even if new unread messages have been received while the windows were closed.
I just found the following thread and tried its advice: http:// ubuntuforums. org/showthread. php?t=1616922
Setting the option to "Show system tray icon" in 'Settings > Configure > Behavior > System Tray' solves this issue for me. I can now close all Kopete windows and then reopen them from the message indicator, even if new unread messages have been received while the windows were closed.
Hope this helps.