Version: unknown (using 4.1.85 (KDE 4.1.85 (KDE 4.2 Beta2)) "release 3.1", KDE:KDE4:UNSTABLE:Desktop / openSUSE_11.1) Compiler: gcc OS: Linux (i686) release 2.6.27.7-9-pae the plama file transfer notifier can't be removed when a transfer was aborted. This happened for me when an FTP server become unresponsive. The notification applet remains visible. I managed to remove temporary it by dragging it to the desktop, and removing the spawned plasmoid afterwards. Each time a different notification is made (e.g. by knotify), the job transfer re-appears again in the notification stack.
FYI the widget-notifier product is for the device notifier. ;-) The notification stuff lives the in system tray.
This may be related to bug 181027
Do you still experience this with 4.2.0 final or an updated build ?
Nope, I haven't experienced this issue anymore in the final release.