If one selects an effect in the advanced slideshow dialogue it is remembered, same for "use openGL" etc, yet not for the "delay between images". digikam is 1.0 svn and kipi: kipi-plugins-lang-0.3-5.10 libkipi-devel-4.2.4-1.4 kipi-plugins-0.3-5.10 libkipi6-4.2.4-1.4
*** This bug has been marked as a duplicate of bug 200647 ***
Fixed with https://bugs.kde.org/show_bug.cgi?id=200647