On Tuesday 18 Oct 2011 22:52:56 Mick wrote:
> Just woken up the box from sleep and within a minute I was alarmed by the
> fan racing up and the temperature showing 71.0-76.0C
> 
> Top showed that one of the two knotify processes was consuming 100% of CPU:
> ===============================================
>   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
>  6665 michael   21   1  299m  23m  16m S  100  0.6   6:27.02 kdeinit4:
> kded4 [kdeinit]
>  6709 michael   21   1  602m  36m  20m S  100  0.9   7:01.68
> /usr/bin/knotify4 2799 michael   21   1  579m  34m  20m S    1  0.9  
> 0:05.13 /usr/bin/knotify4 
===============================================
> 
> # lsof | grep -i /usr/bin/knotify4
> knotify4   2799    michael  txt       REG                8,7   176600
> 559245 /usr/bin/knotify4
> knotify4   6709    michael  txt       REG                8,7   176600
> 559245 /usr/bin/knotify4
> 
> I thought of sharing what I saw above as this is not happening that often
> on my laptop.  I know that others have also reported knotify playing up.
> 
> The only KDE application that I was running after I woke up the machine
> from sleep was kmail-1.13.7 (KDE-4.6.5)
> 
> Is there an update on this problem that you know of?

After some further investigation it is worth reporting that the problem was 
caused not by knotify, but by kdeinit!

I exited X and stopped xdm.  Only one knotify4 was left running as well as the 
kdeinit, both pegged at 100% and neither would go away after the X session had 
exited.  I was able to kill -15 the knotify PID, but the kdeinit would not 
shift until I used kill -9.

-- 
Regards,
Mick