Version:           unspecified (using KDE 4.7.2) 
OS:                Linux

I created several caldav and carddav resources with several servers (one of the google with 7 calendars).
Then kontact got high cpu usage (over 70%). After closing kontact (for restarting it), mysqld got over 70% cpu. I then wanted to reboot to see whether the problem would go away. It failed to shut down, so I switched to console and rebooted manually (sudo reboot).
At the next login, akonadi complained that it could not upload a certain .ics file to the server: error 401.
I had had this 401 error on several occasions before.

Reproducible: Sometimes

Steps to Reproduce:
create several caldav resources with several collections in some of them.
create new events in kontact
reboot

Actual Results:  
akonadi complains that it cannot upload certain ics files (multiple ones!)

Expected Results:  
sync without errors.