Version: 1.13.1 (using 4.4.1 (KDE 4.4.1), Debian packages) Compiler: cc OS: Linux (i686) release 2.6.32-trunk-686 I'm using "Standard Mailing List" aggregation for folders, so that threads are displayed in nested hierarchies. It regularly happens that there still are unread messages in the folder, as indicated in the Folder List, but I can't access these messages through the "Next Unread Message" action; either from the keyboard or the toolbar. Also, these messages are not shown, when I filter the folder by status "Unread". When I switch to "Flat Date View" aggregation, things work as expected. I'm not entirely sure, but as far as I remember this problem only manifests itself for "watched" threads. It is not possible to simulate the problem by marking a message nested in a watched thread as unread.
*** This bug has been marked as a duplicate of bug 183562 ***