Application: akonaditray (0.1)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-13-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
And it is not even hard.

You just have to run BleachBit (bleachbit-cli on another session WILL work) with all options (because I do not know which option is the one that kills everything).
Every program you start after the cleanup and every program running at the moment will CRASH. This also works if you are another, evil, user running bleachbit-cli on ssh to kill the KDE-screenlock of another user using the KDE desktop environment.

How to reconstruct the bug:
1. Lock the screen
2. Press Ctrl+Alt+F1 (or whatever).
3. login as any user
4. run bleachbit-cli with all options
5. return to Ctrl+Alt+F7 and move your mouse
6. The screen lock and every program protecting the session CRASHES!

I could not believe that it works, but it does. And it also works on another computers I use to test this.
You do not have to  run bleachbit as root. I am sure that it will also work if you login per ssh. Try it! O.O

This is the first program which crashed. To report the other ones, I need the debug symbols - and apt-get keeps crashing. xD

-- END OF PART 4 --

Sorry for missing debug symbols this time, but the policy kit AND apt-get crashed, too. I could not install them. :/

The crash can be reproduced every time.

-- Backtrace:
Application: Akonadi-Modul (akonaditray), signal: Bus error
[KCrash Handler]
#6  0x00007f2c9f5a16f7 in lock (this=0x2549840) at ../../kdecore/util/kshareddatacache.cpp:1123
#7  KSharedDataCache::Private::CacheLocker::cautiousLock (this=0x7fff6e46e5f0) at ../../kdecore/util/kshareddatacache.cpp:1146
#8  0x00007f2c9f59d959 in CacheLocker (_d=<optimized out>, this=0x7fff6e46e5f0) at ../../kdecore/util/kshareddatacache.cpp:1170
#9  KSharedDataCache::find (this=0x2554e60, key=..., destination=0x7fff6e46e6c0) at ../../kdecore/util/kshareddatacache.cpp:1492
#10 0x00007f2ca0064dd9 in KIconLoaderPrivate::findCachedPixmapWithPath (this=0x2563600, key=..., data=..., path=...) at ../../kdeui/icons/kiconloader.cpp:860
#11 0x00007f2ca00650f1 in KIconLoader::loadIcon (this=0x253c770, _name=<optimized out>, group=KIconLoader::Desktop, size=48, state=0, overlays=..., path_store=0x0, canReturnNull=false) at ../../kdeui/icons/kiconloader.cpp:1222
#12 0x00007f2ca0065ccc in DesktopIcon (name=..., force_size=0, state=0, overlays=...) at ../../kdeui/icons/kiconloader.cpp:1605
#13 0x00000000004095b2 in _start ()

Possible duplicates by query: bug 284819, bug 284770.

Reported using DrKonqi