Version:            (using KDE 4.2.2)
Compiler:          g++ (Ubuntu 4.3.3-5ubuntu4) 4.3.3 
OS:                Linux
Installed from:    Ubuntu Packages

The application Plasma Workspace (plasma) crashed and caused the signal 11 (SIGSEGV). This occurs every time kppp connects to the internet for the first time. Also something similar happens when disconnecting and removing my Sierra USB modem converter. Here is the error report I have : 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.  (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) [Thread debugging using libthread_db enabled] [New Thread 0xb3d0c730 (LWP 4616)] [New Thread 0xa8167b90 (LWP 4622)] 0xb7ff0430 in __kernel_vsyscall () [Current thread is 0 (LWP 4616)]  Thread 2 (Thread 0xa8167b90 (LWP 4622)): #0  0xb7ff0430 in __kernel_vsyscall () #1  0xb51260e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0 #2  0xb63352ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6 #3  0xb65219b2 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4 #4  0xa8222b9a in ?? () from /usr/lib/kde4/plasma_wallpaper_image.so #5  0xb652096e in ?? () from /usr/lib/libQtCore.so.4 #6  0xb51224ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0 #7  0xb632649e in clone () from /lib/tls/i686/cmov/libc.so.6  Thread 1 (Thread 0xb3d0c730 (LWP 4616)): #0  0xb7ff0430 in __kernel_vsyscall () #1  0xb62e17a6 in nanosleep () from /lib/tls/i686/cmov/libc.so.6 #2  0xb62e15be in sleep () from /lib/tls/i686/cmov/libc.so.6 #3  0xb77898b2 in ?? () from /usr/lib/libkdeui.so.5 #4  0xb778a274 in KCrash::defaultCrashHandler () from /usr/lib/libkdeui.so.5 #5  <signal handler called> #6  0xa836e1ad in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so #7  0xa83807dd in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so #8  0xa836bbfb in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so #9  0xb662aca8 in QMetaObject::activate () from /usr/lib/libQtCore.so.4 #10 0xb662b932 in QMetaObject::activate () from /usr/lib/libQtCore.so.4 #11 0xa836a9d7 in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so #12 0xa836ff1d in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so #13 0xa83705fc in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so #14 0xa837e054 in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so #15 0xa836bc4b in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so #16 0xb662aca8 in QMetaObject::activate () from /usr/lib/libQtCore.so.4 #17 0xb662b932 in QMetaObject::activate () from /usr/lib/libQtCore.so.4 #18 0xa84828b3 in Solid::Control::NetworkManager::Notifier::networkInterfaceRemoved () from /usr/lib/libsolidcontrol.so.4 #19 0xa8483166 in ?? () from /usr/lib/libsolidcontrol.so.4 #20 0xa84832bd in ?? () from /usr/lib/libsolidcontrol.so.4 #21 0xb662aca8 in QMetaObject::activate () from /usr/lib/libQtCore.so.4 #22 0xb662b932 in QMetaObject::activate () from /usr/lib/libQtCore.so.4 #23 0xa8313503 in NMNetworkManager::networkInterfaceRemoved () from /usr/lib/kde4/solid_networkmanager07.so #24 0xa8314eb5 in NMNetworkManager::deviceRemoved () from /usr/lib/kde4/solid_networkmanager07.so #25 0xa831687a in NMNetworkManager::qt_metacall () from /usr/lib/kde4/solid_networkmanager07.so #26 0xb662aca8 in QMetaObject::activate () from /usr/lib/libQtCore.so.4 #27 0xb662b932 in QMetaObject::activate () from /usr/lib/libQtCore.so.4 #28 0xa8324d03 in ?? () from /usr/lib/kde4/solid_networkmanager07.so #29 0xa832572d in ?? () from /usr/lib/kde4/solid_networkmanager07.so #30 0xb672dd7a in ?? () from /usr/lib/libQtDBus.so.4 #31 0xb6736187 in ?? () from /usr/lib/libQtDBus.so.4 #32 0xb66253a0 in QObject::event () from /usr/lib/libQtCore.so.4 #33 0xb68c1e9c in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4 #34 0xb68ca19e in QApplication::notify () from /usr/lib/libQtGui.so.4 #35 0xb771994d in KApplication::notify () from /usr/lib/libkdeui.so.5 #36 0xb6614a3b in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4 #37 0xb6615695 in QCoreApplicationPrivate::sendPostedEvents () from /usr/lib/libQtCore.so.4 #38 0xb661588d in QCoreApplication::sendPostedEvents () from /usr/lib/libQtCore.so.4 #39 0xb66407ef in ?? () from /usr/lib/libQtCore.so.4 #40 0xb4f20b88 in IA__g_main_context_dispatch (context=0x9249890) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1814 #41 0xb4f240eb in g_main_context_iterate (context=0x9249890, block=1, dispatch=1, self=0x923e2d8) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2448 #42 0xb4f24268 in IA__g_main_context_iteration (context=0x9249890, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511 #43 0xb6640438 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4 #44 0xb6963365 in ?? () from /usr/lib/libQtGui.so.4 #45 0xb661306a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4 #46 0xb66134aa in QEventLoop::exec () from /usr/lib/libQtCore.so.4 #47 0xb6615959 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4 #48 0xb68c1d17 in QApplication::exec () from /usr/lib/libQtGui.so.4 #49 0xb7f8fb56 in kdemain () from /usr/lib/libkdeinit4_plasma.so #50 0x08048712 in _start () #0  0xb7ff0430 in __kernel_vsyscall ()