Version:           4.1.4 (using KDE 4.1.4)
Installed from:    Ubuntu Packages

This backtrace appears to be of no use.
This is probably because your packages are built in a way which prevents creation of proper backtraces, or the stack frame was seriously corrupted in the crash.

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[Thread debugging using libthread_db enabled]
[New Thread 0xb60a96c0 (LWP 6428)]
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0xb7f06430 in __kernel_vsyscall ()
[Current thread is 0 (process 6428)]

Thread 1 (Thread 0xb60a96c0 (LWP 6428)):
#0  0xb7f06430 in __kernel_vsyscall ()
#1  0xb7dfff10 in nanosleep () from /lib/tls/i686/cmov/libc.so.6
#2  0xb7dffd4e in sleep () from /lib/tls/i686/cmov/libc.so.6
#3  0xb79b5612 in ?? () from /usr/lib/libkdeui.so.5
#4  0xb79b6014 in KCrash::defaultCrashHandler () from /usr/lib/libkdeui.so.5
#5  <signal handler called>
#6  0xb73ca2a4 in QString::operator== () from /usr/lib/libQtCore.so.4
#7  0xb7bf088d in ?? () from /usr/lib/libkio.so.5
#8  0xb7bf0b3b in ?? () from /usr/lib/libkio.so.5
#9  0xb748da60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#10 0xb748e7e2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#11 0xb74c8633 in QSocketNotifier::activated () from /usr/lib/libQtCore.so.4
#12 0xb7493637 in QSocketNotifier::event () from /usr/lib/libQtCore.so.4
#13 0xb6a0b8ec in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#14 0xb6a1372e in QApplication::notify () from /usr/lib/libQtGui.so.4
#15 0xb7947d1d in KApplication::notify () from /usr/lib/libkdeui.so.5
#16 0xb7478e61 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#17 0xb74a370a in ?? () from /usr/lib/libQtCore.so.4
#18 0xb643b718 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#19 0xb643edc3 in ?? () from /usr/lib/libglib-2.0.so.0
#20 0xb643ef81 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#21 0xb74a3478 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#22 0xb6aa5ea5 in ?? () from /usr/lib/libQtGui.so.4
#23 0xb747752a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#24 0xb74776ea in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#25 0xb7479da5 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#26 0xb6a0b767 in QApplication::exec () from /usr/lib/libQtGui.so.4
#27 0xb7ecbec6 in kdemain () from /usr/lib/libkdeinit4_kded4.so
#28 0x080485a2 in _start ()
#0  0xb7f06430 in __kernel_vsyscall ()