Printer applet crashes on '/etc/init.d/networking stop'

[Volodymyr Kolesnykov]

[KCrash Handler]
#6 setEnabled (enable=true, this=0x26a53b0) at kernel/qsocketnotifier.cpp:293
#7 QSocketNotifier::setEnabled (this=0x26a53b0, enable=true) at kernel/qsocketnotifier.cpp:284
#8 0x00007f5ccc128487 in ?? () from /usr/lib/python2.7/dist-packages/dbus/mainloop/qt.so
#9 0x00007f5cd75d58f1 in QMetaObject::activate (sender=0x26a53b0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff86d55c40) at kernel/qobject.cpp:3547
#10 0x00007f5cd76227ae in QSocketNotifier::activated (this=<optimized out>, _t1=11) at .moc/release-shared/moc_qsocketnotifier.cpp:103
#11 0x00007f5cd75dec7b in QSocketNotifier::event (this=0x26a53b0, e=0x7fff86d562e0) at kernel/qsocketnotifier.cpp:317
#12 0x00007f5cd54026b4 in notify_helper (e=0x7fff86d562e0, receiver=0x26a53b0, this=0x2392f40) at kernel/qapplication.cpp:4555
#13 QApplicationPrivate::notify_helper (this=0x2392f40, receiver=0x26a53b0, e=0x7fff86d562e0) at kernel/qapplication.cpp:4527
#14 0x00007f5cd5407533 in QApplication::notify (this=0x23842e0, receiver=0x26a53b0, e=0x7fff86d562e0) at kernel/qapplication.cpp:4416
#15 0x00007f5ccf8cc906 in KApplication::notify (this=0x23842e0, receiver=0x26a53b0, event=0x7fff86d562e0) at ../../kdeui/kernel/kapplication.cpp:311
#16 0x00007f5cd032fe26 in notify (a1=0x7fff86d562e0, a0=0x26a53b0, this=0x23842e0) at sip/kdeui/sipkdeuipart7.cpp:53793
#17 sipKApplication::notify (this=0x23842e0, a0=0x26a53b0, a1=0x7fff86d562e0) at sip/kdeui/sipkdeuipart7.cpp:53785
#18 0x00007f5cd75c150c in QCoreApplication::notifyInternal (this=0x23842e0, receiver=0x26a53b0, event=0x7fff86d562e0) at kernel/qcoreapplication.cpp:876
#19 0x00007f5cd75f0107 in sendEvent (event=0x7fff86d562e0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#20 socketNotifierSourceDispatch (source=0x2393180) at kernel/qeventdispatcher_glib.cpp:110
#21 0x00007f5cd6c91c9a in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f5cd6c92060 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f5cd6c92124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f5cd75f0a2f in QEventDispatcherGlib::processEvents (this=0x2390b90, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#25 0x00007f5cd54aab1e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#26 0x00007f5cd75c02f2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#27 0x00007f5cd75c0547 in QEventLoop::exec (this=0x7fff86d564f0, flags=...) at kernel/qeventloop.cpp:204
#28 0x00007f5cd75c55d7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#29 0x00007f5cd6384c5e in meth_QApplication_exec_ (sipArgs=<optimized out>) at sipQtGuipart9.cpp:37856
#30 0x0000000000562ad2 in PyEval_EvalFrameEx ()
#31 0x000000000056a166 in PyEval_EvalCodeEx ()
#32 0x000000000055f10b in run_mod ()
#33 0x000000000055f9d4 in PyRun_FileExFlags ()
#34 0x000000000055fc41 in PyRun_SimpleFileExFlags ()
#35 0x000000000056102d in Py_Main ()
#36 0x00007f5cd860d76d in __libc_start_main (main=0x41b940 <main>, argc=2, ubp_av=0x7fff86d56ae8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff86d56ad8) at libc-start.c:226
#37 0x000000000041b971 in _start ()

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: printer-applet 4:4.8.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-20.33-generic 3.2.12
Uname: Linux 3.2.0-20-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.0-0ubuntu2
Architecture: amd64
Date: Sat Mar 31 22:19:03 2012
ExecutablePath: /usr/share/kde4/apps/printer-applet/printer-applet.py
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=ru_RU:ru
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
SourcePackage: printer-applet
UpgradeStatus: Upgraded to precise on 2012-03-18 (13 days ago)

[Volodymyr Kolesnykov (sjinks)]

The bug is probably not in the printer applet itself but somewhere in python-qt4.