Hi @spezi77
In 4.4 Roms sometimes when I reboot the phone "optimizing apps " Dialog appears and when its done phone boots and every process ( systemui, phone, media and so on ) will force close and have to just restore a backup or re install the Rom .
Is it a common problem Or it is just for me ??
I don't believe that it is a common problem.
I guess that it comes from restoring apps/data by using Titanium Backup or another problem with your partitions or an issue during installation.
If I install my apps completely from scratch (via Google Play) I never have observed this issue.