Version:           unspecified (using KDE 4.7.3) 
OS:                Linux

After booting the panel doesn't react for about 2 minutes (just after everything got loadet in it).
I can start any programs though with alt+F2.
htop tells me that plasma-desktop is using 100% CPU.

After the 2mins I get my messages telling that Nepumuk ain't running (I disabled that). The CPU goes down then and everything is all right.

Now I figured out, that if I diasble to show my appointments in the calendar of the system clock the problem is fixed for me.
But if I have them activated they are actually shown after the panel is finally reacting again.


I have one more problem with the calendar which is related (which ist actuelly the reason why I got to the point to turn off the calendar in the system clock):

I sync my ical file with unison between desktop and netbook. Each time the file is synced plasma crashes, leaving the running applications an X untouched. Just the panel and the wallpaper is gone, not coming back by itself, not asking to report the crash.
This also only happens if the calendar is shown in the system clock.
My calendar works fine in Kontact though. It just keeps forgetting that I activated it, also forgetting the color I assigned to it.

Reproducible: Always

Steps to Reproduce:
Replace the ical file that is set up in akonadi (copy a different one over the existing one) (To crash plasma)

I guess to reproduce the panel-hang you would need my ical file!?

Actual Results:  
Panel and Wallpaper gone, programs still running, alt+F2 still works, no error message.

Expected Results:  
Keep runnung ;-)

Same Problem in KDE 4.7.2