KDE startup much slower than expected

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http://www.linuxquestions.org – Hi everyone. I am using Mageia, the startup is fast and smooth. It changes over to the login screen for KDE. There are 5 dots, representing the progress of KDE bootup. It runs through the first 4 dots instantly, and then get stuck on the last dot for about 10-15 seconds. I have recently had my distro installed with KDE, where this last dot took only 2-3 seconds. So the 15 seconds is far longer than expected. I have tried to analyse the problem using bootchart and "systemd-analyse blame" and "time". I cannot see any obvious sinners in any of them that should cause KDE to (HowTos)