undefined symbol - find library

Hi, I upgraded to trinity-daily-build and downgraded back to 3.5.13. But I probably didn't downgraded some libraries and now I am getting undefined symbol messages: jirka@rommie:~$ kded: symbol lookup error: /opt/trinity/lib/trinity/kded_mediamanager.so: undefined symbol: _ZN6DBusQt10ConnectionC1EP7QObject jirka@rommie:~$ kpowersave kpowersave: symbol lookup error: /opt/trinity/lib/libkdeinit_kpowersave.so: undefined symbol: _ZN6DBusQt10ConnectionC1EP7QObject Do you know, how can i find in which library is this symobl defined and try to fix it? Thanks Regards Jiri Jansky