nspluginviewer crashed with SIGSEGV in nsPluginInstance::getCurrentPageURL()

Running Kubuntu 9.10, upgreded from 9.04 via Internet.

ProblemType: Crash
Architecture: i386
CrashCounter: 1
Date: Wed Nov 4 22:17:23 2009
Disassembly: 0x0: Cannot access memory at address 0x0
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/nspluginviewer
NonfreeKernelModules: fglrx
Package: konqueror-nsplugins 4:4.3.2-0ubuntu3
ProcCmdline: /usr/bin/nspluginviewer -dbusservice org.kde.nspluginviewer-8707
ProcEnviron:
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
 LANGUAGE=
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SegvAnalysis:
 Segfault happened at: 0x0: Cannot access memory at address 0x0
 PC (0x00000000) not located in a known VMA region (needed executable region)!
SegvReason: executing NULL VMA
Signal: 11
SourcePackage: kdebase
StacktraceTop:
 ?? ()
 nsPluginInstance::getCurrentPageURL() const ()
 nsPluginInstance::startProc(unsigned long) ()
 nsPluginInstance::NewStream(char*, _NPStream*, unsigned char, unsigned short*) () from /usr/lib/firefox/plugins/flashplugin-alternative.so
 NPP_NewStream ()
Title: nspluginviewer crashed with SIGSEGV in nsPluginInstance::getCurrentPageURL()
Uname: Linux 2.6.31-14-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors:
 (polkit-gnome-authentication-agent-1:1788): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (synaptic:2998): Gtk-CRITICAL **: gtk_tree_view_unref_tree_helper: assertion `node != NULL' failed
 (synaptic:2998): Gtk-CRITICAL **: gtk_tree_view_unref_tree_helper: assertion `node != NULL' failed
 (synaptic:6217): Gtk-CRITICAL **: gtk_tree_view_unref_tree_helper: assertion `node != NULL' failed