Application that crashed: nspluginviewer
Version of the application: 
KDE Version: 4.3.3 (KDE 4.3.3)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-14-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
Almost every time I browse www.rbc.ru this error happens

 -- Backtrace:
Application: nspluginviewer (nspluginviewer), signal: Segmentation fault
[Current thread is 1 (Thread 0xb77c0700 (LWP 8869))]

Thread 3 (Thread 0xb51adb70 (LWP 8873)):
#0  0x004b1422 in __kernel_vsyscall ()
#1  0x0672de15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x0058b78d in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x03a9078f in ?? () from /usr/lib/firefox/plugins/flashplugin-alternative.so
#4  0x03bc1b3f in ?? () from /usr/lib/firefox/plugins/flashplugin-alternative.so
#5  0x03a90c3d in ?? () from /usr/lib/firefox/plugins/flashplugin-alternative.so
#6  0x0672980e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0x0057e7ee in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xb49acb70 (LWP 8874)):
#0  0x004b1422 in __kernel_vsyscall ()
#1  0x0672de15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x0058b78d in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x03a9078f in ?? () from /usr/lib/firefox/plugins/flashplugin-alternative.so
#4  0x03bc1b3f in ?? () from /usr/lib/firefox/plugins/flashplugin-alternative.so
#5  0x03a90c3d in ?? () from /usr/lib/firefox/plugins/flashplugin-alternative.so
#6  0x0672980e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0x0057e7ee in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb77c0700 (LWP 8869)):
[KCrash Handler]
#6  0x00cb8046 in g_slice_alloc () from /lib/libglib-2.0.so.0
#7  0x00cb8705 in g_slice_alloc0 () from /lib/libglib-2.0.so.0
#8  0x07a618d7 in g_type_create_instance () from /usr/lib/libgobject-2.0.so.0
#9  0x07a46748 in ?? () from /usr/lib/libgobject-2.0.so.0
#10 0x07a47b62 in g_object_newv () from /usr/lib/libgobject-2.0.so.0
#11 0x07a4858a in g_object_new_valist () from /usr/lib/libgobject-2.0.so.0
#12 0x07a4870e in g_object_new () from /usr/lib/libgobject-2.0.so.0
#13 0x01e5e71c in gtk_plug_new_for_display () from /usr/lib/libgtk-x11-2.0.so.0
#14 0x01e5e766 in gtk_plug_new () from /usr/lib/libgtk-x11-2.0.so.0
#15 0x03a839cd in ?? () from /usr/lib/firefox/plugins/flashplugin-alternative.so
#16 0x03a79581 in ?? () from /usr/lib/firefox/plugins/flashplugin-alternative.so
#17 0x03a7ddb4 in ?? () from /usr/lib/firefox/plugins/flashplugin-alternative.so
#18 0x08050358 in ?? ()
#19 0x0805e4b3 in ?? ()
#20 0x0805d805 in ?? ()
#21 0x08056a1f in ?? ()
#22 0x0805eb9c in ?? ()
#23 0x006a47b4 in ?? () from /usr/lib/libQtDBus.so.4
#24 0x006a595d in ?? () from /usr/lib/libQtDBus.so.4
#25 0x006a6234 in ?? () from /usr/lib/libQtDBus.so.4
#26 0x006a64da in ?? () from /usr/lib/libQtDBus.so.4
#27 0x00e665fe in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#28 0x01474f54 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#29 0x0147c67c in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#30 0x0119414a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#31 0x00e566cb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#32 0x00e572b2 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#33 0x00e5747d in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr/lib/libQtCore.so.4
#34 0x00e813ff in ?? () from /usr/lib/libQtCore.so.4
#35 0x00c99e78 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#36 0x00c9d720 in ?? () from /lib/libglib-2.0.so.0
#37 0x00c9d853 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#38 0x00e8102c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#39 0x01515be5 in ?? () from /usr/lib/libQtGui.so.4
#40 0x00e54c79 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#41 0x00e550ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#42 0x00e5753f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#43 0x01474dd7 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#44 0x0805c7c0 in ?? ()
#45 0x004c8b56 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#46 0x0804e591 in _start ()

Reported using DrKonqi