When the mail dispatcher has been offline, as a result of a an authentication failure or for some other reason, the next time an email is to be sent, it will ask twice for going back online. The first time is normal because the mail dispatcher is offline, but even after pressing "Yes" there is a second popup to ask if the mail dispatcher should be put online.
I confirm it. Will investigate.
Git commit 83351680e5a8726e531f3c450a9c049367bb376f by Montel Laurent. Committed on 09/09/2013 at 07:05. Pushed by mlaurent into branch 'KDE/4.11'. Fix Bug 323707 - Mail dispatcher will ask twice for going online when sending an email after an offline period FIXED-IN: 4.11.2 M +1 -1 kmail/editor/kmcomposewin.cpp M +2 -2 messagecomposer/composer/composerviewbase.cpp M +1 -1 messagecomposer/composer/composerviewbase.h http://commits.kde.org/kdepim/83351680e5a8726e531f3c450a9c049367bb376f