Version: (using KDE 4.4.0) Installed from: openSUSE RPMs I've got some messages in any folder, sorted by date (newest at the bottom), threaded view. Now I start reading at the top (oldest message). As soon as I read the message I delete it. Now, if I'm within a thread, the next active message very often is not the next message in the list, but some other message way down. Hitting 'N' to walk through those messages one by one properly works. If necessary I can provide two screen shots, one before the delete, one after the delete. I just have to restore some useful messages or threads.
Works in KMail2 4.10.3.