Would be possible to convert Persistent KNotifications to CloseOnTimeout? I guess users don't care about a {dis,}connection that happened some hour ago.
Git commit f63d2a73e6ee61ce1b26b1c103124dee027a4189 by Jan Grulich. Committed on 13/01/2014 at 12:55. Pushed by grulich into branch 'master'. Make notifications disappear after some time M +3 -3 kded/notification.cpp http://commits.kde.org/plasma-nm/f63d2a73e6ee61ce1b26b1c103124dee027a4189