Description of problem:
By accident, I've run Konqueror as root. I've hit Ctrl+C immediately.

On console, there was this output:

# /usr/bin/konqueror
konqueror(24921)/kdeui (kdelibs): Session bus not found 
To circumvent this problem try the following command (with Linux and bash) 
export $(dbus-launch) 
KCrash: Application 'konqueror' crashing...
KCrash: Attempting to start /usr/libexec/kde4/drkonqi from kdeinit
sock_file=/root/.kde/socket-kvolny.usersys.redhat.com/kdeinit4__0
Warning: connect() failed: : Adresář nebo soubor neexistuje
KCrash: Attempting to start /usr/libexec/kde4/drkonqi directly
drkonqi(24922)/kdeui (kdelibs): Session bus not found 
To circumvent this problem try the following command (with Linux and bash) 
export $(dbus-launch) 
^C

Then I got this report about DrKonqi crashing ...

Version-Release number of selected component:
kde-runtime-drkonqi-4.10.4-1.fc19

Additional info:
reporter:       libreport-2.1.5
backtrace_rating: 4
cmdline:        /usr/libexec/kde4/drkonqi -display :0 --appname konqueror --apppath /usr/bin --signal 6 --pid 24921 --appversion 4.10.4 --programname Konqueror --bugaddress submit.org --startupid 0
crash_function: qt_message_output
executable:     /usr/libexec/kde4/drkonqi
kernel:         3.9.5-301.fc19.x86_64
runlevel:       N 5
uid:            0
var_log_messages: Jun 21 13:51:55 kvolny abrt[24924]: Saved core dump of pid 24922 (/usr/libexec/kde4/drkonqi) to /var/tmp/abrt/ccpp-2013-06-21-13:51:54-24922 (8884224 bytes)
xsession_errors: 

Truncated backtrace:
Thread no. 1 (4 frames)
 #2 qt_message_output at global/qglobal.cpp:2323
 #3 QDebug::~QDebug at /usr/include/QtCore/qdebug.h:85
 #4 KApplicationPrivate::init at /usr/src/debug/kdelibs-4.10.4/kdeui/kernel/kapplication.cpp:516
 #5 KApplication::KApplication at /usr/src/debug/kdelibs-4.10.4/kdeui/kernel/kapplication.cpp:352

Potential duplicate: bug 855739