After the last KDE Update an annoying message popped up at login here, showing me my last login time. Pretty uncool if you want your system to do its stuff automatically without confirmation of such dialogs. So I did a small research about where that bugger comes from. So far I didn’t find much in the KDE land.
The problems root must have been somewhere else. Peeking into stuff I found the problem in /etc/pam.d/system-login which is clearly PAM related:
session optional pam_lastlog.so
The fix is easy. Just append ‘silent’ to that line:
session optional pam_lastlog.so silent
… that’s all folks. Hope to save someone trouble that way.