Version:            (using KDE 4.1.2)
OS:                Linux
Installed from:    Ubuntu Packages

When starting amarok2, I always get the KDE Crash Handler coming up and notifying me about:

The application KDE Daemon (kded4) crashed and caused the signal 6 (SIGABRT).

However, I experience no obvious further effects, amarok just runs fine.

Here are the details:

Application: KDE Daemon (kded4), signal SIGABRT
(no debugging symbols found)
...
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread 0xb61db6c0 (LWP 6674)]
(no debugging symbols found)
...
(no debugging symbols found)
[KCrash handler]
#6  0xb7f15410 in __kernel_vsyscall ()
#7  0xb7dcb085 in raise () from /lib/tls/i686/cmov/libc.so.6
#8  0xb7dcca01 in abort () from /lib/tls/i686/cmov/libc.so.6
#9  0xb7497367 in qt_message_output () from /usr/lib/libQtCore.so.4
#10 0xb7497458 in qFatal () from /usr/lib/libQtCore.so.4
#11 0xb7497505 in qt_assert () from /usr/lib/libQtCore.so.4
#12 0xb49239d2 in ?? () from /usr/lib/kde4/lib/kde4/kded_globalaccel.so
#13 0xb4928ce6 in ?? () from /usr/lib/kde4/lib/kde4/kded_globalaccel.so
#14 0xb4923fef in ?? () from /usr/lib/kde4/lib/kde4/kded_globalaccel.so
#15 0xb7313880 in ?? () from /usr/lib/libQtDBus.so.4
#16 0xb7314ad6 in ?? () from /usr/lib/libQtDBus.so.4
#17 0xb73150fc in ?? () from /usr/lib/libQtDBus.so.4
#18 0xb73154aa in ?? () from /usr/lib/libQtDBus.so.4
#19 0xb759ac31 in QObject::event () from /usr/lib/libQtCore.so.4
#20 0xb6af9f9c in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#21 0xb6afebf9 in QApplication::notify () from /usr/lib/libQtGui.so.4
#22 0xb7a08483 in KApplication::notify () from /usr/lib/kde4/lib/libkdeui.so.5
#23 0xb758b0b9 in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
#24 0xb758c469 in QCoreApplicationPrivate::sendPostedEvents ()
   from /usr/lib/libQtCore.so.4
#25 0xb758c68d in QCoreApplication::sendPostedEvents ()
   from /usr/lib/libQtCore.so.4
#26 0xb75b662f in ?? () from /usr/lib/libQtCore.so.4
#27 0xb6531cc6 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#28 0xb6535083 in ?? () from /usr/lib/libglib-2.0.so.0
#29 0xb653563e in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#30 0xb75b69f8 in QEventDispatcherGlib::processEvents ()
   from /usr/lib/libQtCore.so.4
#31 0xb6b8da25 in ?? () from /usr/lib/libQtGui.so.4
#32 0xb758a33d in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#33 0xb758a4cd in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#34 0xb758c74d in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#35 0xb6af9897 in QApplication::exec () from /usr/lib/libQtGui.so.4
#36 0xb7f0bc12 in kdemain () from /usr/lib/kde4/lib/libkdeinit4_kded4.so
#37 0x08048572 in _start ()
#0  0xb7f15410 in __kernel_vsyscall ()

Hope that helps anyway.