Jessie KDE 4.8. extremely slow start

[debmailist@Safe-mail.net]

Setup: clean minimal Jessie install + aptitude install xorg kde-plasma-desktop
KDE loading procedure is extremely slow (~5 min). On splash screen the harddrive icon pops up immediately but then the rest of the icons won't show up for the next few minutes (and the last K-icon even longer). When desktop is finally up and running, some applications (konsole konqueror) start normally while others (dolphin, kate) don't want to show up for the good amount of time. When finally started they seem to work ok. 
Same thing with "Log out" and "Shutdown" - it take ages to apply it. Other than that system seems to be pretty responsive.

I suspect it might have something to do with some missing packages - cause when KDE is installed automatically with Debian installer there's no such problems.

Any help would be greatly appreciated.