Version: 4.1.96 (svn 911645) (using Devel) Compiler: gcc version 4.3.2 (Debian 4.3.2-1) OS: Linux Installed from: Compiled sources Steps to reproduce: 0) Trigger a notification. Normally, only one popup is shown for this notification. 1) Assuming you have your system tray plasmoid on a panel, drag the systray plasmoid from the panel to the desktop. 2) Trigger a notification again. This time, two popups are shown for this notification. 3) Drag again the systray on the panel. 4) Trigger a notification again. Again, two popups are shown. 5) Drag again the systray on the desktop. 6) Trigger a notificatio again. This time, three popups are shown. 7) etc.... So, every time the systray plasmoid moves from the panel to the desktop, notification popups increase by one. The only remedy for this situation is to restart plasma.
Here using: Qt: 4.5.0 + qt-copy-patches-942255 KDE: 4.2.70 (KDE 4.2.70 (KDE 4.3 >= 20090415)) kdelibs svn rev. 958964 / kdebase svn rev. 958965 on ArchLinux i686 - Kernel 2.6.29.1 I can't reproduce this issue. Moving the system tray between panel and desktop some times doesn't increase the quantity of notifications by 1. (Using "kdialog --passivepopup" for tests)
Closing as FIXED. Indeed this was properly fixed on KDE4.3. Thanks Aaron(aseigo) for double-checking this.