Version:           4.7 (using KDE 4.7.3) 
OS:                Linux

Added "tags" as resource to kmail. Deactivated button "turn offline when exiting kmail".
Also defined 3 custom tags for my messages and configured them to be "toolbar buttons"

Upon reboot, tags folders are not shown anymore, neither the toolbar buttons.
Using akonadiconsole, I restarted the tags resource -> upon kmail restart, tag folders and toolbar buttons were present anew.

Narrowed this down that it is sufficient to select the tags resource in akonadiconsole and hit the "synchronize" button (restart not needed). Then start kmail and everything is OK


Reproducible: Always

Steps to Reproduce:
boot, log in, start kmail
-> no tags folder displayed
-> no message tags in toolbar
close kmail
start akonadiconsole, click on "Tags" resource
click on "Synchronize"
start kmail
-> tags folder is shown
-> tag buttons shown in toolbar



Expected Results:  
tags folders should be shown upon kmail's start