After installing kdelibs-4.2.4 with USE=-kdeprefix I have no acces to cookie manager and hokeys dont work. kded4 run with normal user permissions so nomal users need access to /usr/share/kde4/services/kded cd /usr/share/kde4/services and chmod a+rx kded as root solve that problem for me. Maybe other permissions under /usr/share/kde4/services are althoug wrong.
Hmm, this may be related to somewhat known bug - broken permissions to /usr/share/config. Unfortunately we haven't managed to find the source of the problem yet.
I had this problem with 4.2.4, but found a solution on kde bugzilla. I'll try to find it and post a solution. I can also confirm, that bug is gone in 4.3.0
Hmm, would be nice to see whether it really is gone now... I know we have code in eclass that 'fixes' permissions, but that should not be needed...
After erasing /usr/share/kde4/services/kded and emerging kdelibs-4.2.4-r4 the permissions seem to be ok. After emerging kdelibs-4.3.0 the permissions are ok.