attached backtrace with the following software levels :


$ dpkg -l *phonon* *kalarm* kdelibs* *qt* *xine* | grep ^ii | sort | cut -c1-95 
ii  apport-qt                                  1.0-0ubuntu5.2                                                       
ii  gtk2-engines-qtcurve                       0.62.8-0ubuntu1                                                      
ii  gtk-qt-engine                              1:1.1+svn20080816-0ubuntu7                                           
ii  gtk-qt-engine-kde4                         1:1.1+svn20080816-0ubuntu7                                           
ii  kalarm                                     4:4.2.4-0ubuntu1~jaunty1~ppa2                                        
ii  kdelibs4c2a                                4:3.5.10.dfsg.1-1ubuntu8                                             
ii  kdelibs5                                   4:4.2.4-0ubuntu1~jaunty1~ppa2                                        
ii  kdelibs5-data                              4:4.2.4-0ubuntu1~jaunty1~ppa2                                        
ii  kdelibs5-dbg                               4:4.2.4-0ubuntu1~jaunty1~ppa2                                        
ii  kdelibs-bin                                4:4.2.4-0ubuntu1~jaunty1~ppa2                                        
ii  kdelibs-data                               4:3.5.10.dfsg.1-1ubuntu8                                             
ii  kdelibs-dbg                                4:3.5.10.dfsg.1-1ubuntu8                                             
ii  language-selector-qt                       0.4.2.3                                                              
ii  libaqbanking20-plugins-qt                  3.7.2-1                                                              
ii  libavahi-qt3-1                             0.6.23-4ubuntu4                                                      
ii  libdbus-1-qt3                              0.9-0ubuntu1                                                         
ii  libdbus-qt-1-1c2                           0.62.git.20060814-2build1                                            
ii  libpackagekit-qt11                         0.3.14-0ubuntu5                                                      
ii  libphonon4                                 4:4.3.1-0ubuntu3                                                     
ii  libpoppler-qt4-3                           0.10.5-1ubuntu2.2                                                    
ii  libqt3-mt                                  3:3.3.8-b-5ubuntu1                                                   
ii  libqt4-assistant                           4.5.0-0ubuntu4.1                                                     
ii  libqt4-core                                4.5.0-0ubuntu4.1                                                     
ii  libqt4-dbg                                 4.5.0-0ubuntu4.1                                                     
ii  libqt4-dbus                                4.5.0-0ubuntu4.1                                                     
ii  libqt4-designer                            4.5.0-0ubuntu4.1                                                     
ii  libqt4-dev                                 4.5.0-0ubuntu4.1                                                     
ii  libqt4-help                                4.5.0-0ubuntu4.1                                                     
ii  libqt4-network                             4.5.0-0ubuntu4.1                                                     
ii  libqt4-opengl                              4.5.0-0ubuntu4.1                                                     
ii  libqt4-opengl-dev                          4.5.0-0ubuntu4.1                                                     
ii  libqt4-qt3support                          4.5.0-0ubuntu4.1                                                     
ii  libqt4-script                              4.5.0-0ubuntu4.1                                                     
ii  libqt4-scripttools                         4.5.0-0ubuntu4.1                                                     
ii  libqt4-sql                                 4.5.0-0ubuntu4.1                                                     
ii  libqt4-sql-mysql                           4.5.0-0ubuntu4.1                                                     
ii  libqt4-sql-sqlite                          4.5.0-0ubuntu4.1                                                     
ii  libqt4-svg                                 4.5.0-0ubuntu4.1
ii  libqt4-test                                4.5.0-0ubuntu4.1
ii  libqt4-webkit                              4.5.0-0ubuntu4.1
ii  libqt4-xml                                 4.5.0-0ubuntu4.1
ii  libqt4-xmlpatterns                         4.5.0-0ubuntu4.1
ii  libqtcore4                                 4.5.0-0ubuntu4.1
ii  libqtgui4                                  4.5.0-0ubuntu4.1
ii  libqtscriptbindings1                       0.1.0-0ubuntu1~jaunty1
ii  libstrigiqtdbusclient0                     0.6.4-0ubuntu2
ii  libxine1                                   1.1.16.3-0ubuntu1
ii  libxine1-bin                               1.1.16.3-0ubuntu1
ii  libxine1-console                           1.1.16.3-0ubuntu1
ii  libxine1-dbg                               1.1.16.3-0ubuntu1
ii  libxine1-ffmpeg                            1.1.16.3-0ubuntu1
ii  libxine1-gnome                             1.1.16.3-0ubuntu1
ii  libxine1-misc-plugins                      1.1.16.3-0ubuntu1
ii  libxine1-plugins                           1.1.16.3-0ubuntu1
ii  libxine1-x                                 1.1.16.3-0ubuntu1
ii  libxinerama1                               2:1.0.3-2
ii  libxinerama-dev                            2:1.0.3-2
ii  phonon                                     4:4.3.1-0ubuntu3
ii  phonon-backend-xine                        4:4.3.1-0ubuntu3
ii  phonon-dbg                                 4:4.3.1-0ubuntu3
ii  pinentry-qt4                               0.7.3+svn799201-1ubuntu1
ii  python-qt3                                 3.17.6-1ubuntu1
ii  python-qt4                                 4.4.4-2ubuntu6
ii  python-qt4-common                          4.4.4-2ubuntu6
ii  python-qt4-dbus                            4.4.4-2ubuntu6
ii  qt3-assistant                              3:3.3.8-b-5ubuntu1
ii  qt3-doc                                    3:3.3.8-b-5ubuntu1
ii  qt4-qmake                                  4.5.0-0ubuntu4.1
ii  qt4-qtconfig                               4.5.0-0ubuntu4.1
ii  qt-x11-free-dbg                            3:3.3.8-b-5ubuntu1
ii  x11proto-xinerama-dev                      1.1.2-5ubuntu1
ii  xine-ui                                    0.99.5+cvs20070914-2.1~lenny2ubuntu1