Severe system freeze due to akonadi shortly after login (not just GPU lockup, but whole enchilada)

[Robert Simmons]

I noticed a very severe freeze that began recently. I had done a couple of
things simultaneously, so it took a bit of work to triangulate akonadi as the
culprit. My user account was only usable if I logged into the console due to
the freeze, and it was not a GPU lockup that I know of, because I could not ssh
into the machine from the network. The freeze is the whole system, all work is
lost if it was not saved.

I was able to fix the problem by renaming ~/.config/akonadi to something else
then logout/login. Perhaps the akonadi database had become corrupted in some
way that caused the machine to lock up.

It is interesting because I have not used any software that connects or uses
akonadi on this particular machine.

I have saved the offending .config/akonadi directory and can make a tar file of
it if a developer wants it to test what is happening.

Reproducible: Always

Steps to Reproduce:
Use the corrupted config that is attached to this bug report.

Actual Results:
Severe freeze of the whole system, not just X.

Expected Results:
No freeze

I have attached the offending config file.

Versions:
Kubuntu: 11.04
akonadi: 1.6.0

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.