Version: 1.3.1 (using KDE 4.1.1)
Installed from: Ubuntu Packages
I'm running Kubuntu Intrepid.
I believe that the tray icon for Akregator is incorrectly configured. In other applications which have a tray icon, clicking the tray icon when the application is open minimizes the application. When I do this for Akregator, the window disappears for a split-second and then re-appears again. I believe that this behavior may be the result of Akregator trying to "restore" the window again rather than minimize it.
*** This bug has been marked as a duplicate of bug 171642 ***