Kontact Kmail frozen

Just installed Netrunner rolling.After up dating Kmail-Kontact after re boot freezes solid immediatly at tip of the daywhether opened by icon click, Konsole, or search > .System monitor shows a mix of systen D and kdeinit5 ?(Thought it was one or the other?) No unusural memory patterns that I can see?
Is there a fix or am I better to reinstall.If reinstall when will the download update again to a less confused mix of KDE 4 & 5, QT4&5 python 2&3.

Process 1023 - akonadi_control


The process akonadi_control (with pid 1023) is using approximately 2.5 MB of memory.
It is using 2.2 MB privately, and a further 10.2 MB that is, or could be, shared with other programs.
Dividing up the shared memory between all the processes sharing that memory we get a reduced shared memory usage of 247.0 KB. Adding that to the private usage, we get the above mentioned total memory footprint of 2.5 MB.
Library Usage

The memory usage of a process is found by adding up the memory usage of each of its libraries, plus the process’s own heap, stack and any other mappings.
1444 KB [heap]
320 KB /usr/bin/akonadi_control
72 KB /usr/lib/libicuuc.so.55.1
72 KB /usr/lib/libicui18n.so.55.1
72 KB /usr/lib/libQt5Core.so.5.5.0
3044 KB /usr/lib/libQt5Core.so.5.5.0
1196 KB /usr/lib/libstdc++.so.6.0.21
1132 KB /usr/lib/libc-2.22.so
672 KB /usr/lib/libicuuc.so.55.1
636 KB /usr/lib/libicui18n.so.55.1

Private 2272 KB (= 308 KB clean + 1964 KB dirty)
Shared 10408 KB (= 10408 KB clean + 0 KB dirty)
Rss 12680 KB (= Private + Shared)
Pss 2519 KB (= Private + Shared/Number of Processes)
Swap 0 KB
Thanks for any helphttp://forums.netrunner.com/images/smilies/undecided.gif

Systemd is the base system init, kdeinit5 is the Plasma 5 user space init.
Try loging out of Plasma and deleting ~./config/akonadi and ~./local/share/akonadi from a VT (ctrl+alt+f2) and reboot.

Before removing ~/.local/share/akonadi please create a backup as it contains all mails downloaded already.
Otherwise maybe restarting akonadi can work aswell.