After Kontact has crashed, if you click "Restart Application" from DrKonqi, it will give you a scary warning message about losing data because "Kontact already seems to be running on another display on this machine."
Git commit 5550ea281af323a8191a22e38a7c0360f3d4a9a4 by Montel Laurent.
Committed on 10/12/2012 at 09:01.
Pushed by mlaurent into branch 'master'.
Fix Bug 296114 - Kontacts complains it is already running when restarting
Lock file is not necessary now in akonadi.
We access to mail from resources which are able to be access by several
M +4 -0 kmail/kmstartup.cpp