Comment 1 for bug 905417

Stacktrace of the hang:

#3 0x00d33d98 in ?? () from /lib/i386-linux-gnu/libdbus-1.so.3
#4 0x00d328fd in ?? () from /lib/i386-linux-gnu/libdbus-1.so.3
#5 0x00d1a614 in ?? () from /lib/i386-linux-gnu/libdbus-1.so.3
#6 0x00d1bb14 in ?? () from /lib/i386-linux-gnu/libdbus-1.so.3
#7 0x00d2c37f in dbus_pending_call_block ()
   from /lib/i386-linux-gnu/libdbus-1.so.3
#8 0x00c64fde in ?? () from /usr/lib/i386-linux-gnu/libdbus-glib-1.so.2
#9 0x00c681fd in dbus_g_proxy_call ()
   from /usr/lib/i386-linux-gnu/libdbus-glib-1.so.2
#10 0x076c3fdc in bamf_view_get_children ()
   from /usr/lib/i386-linux-gnu/libbamf3.so.0
#11 0x01672f7b in BamfLauncherIcon::OwnsWindow(unsigned long) ()
   from /usr/lib/compiz/libunityshell.so
#12 0x0167301a in BamfLauncherIcon::OnWindowMinimized(unsigned int) ()
   from /usr/lib/compiz/libunityshell.so
#13 0x01679a1d in sigc::internal::slot_call1<sigc::bound_mem_functor1<void, BamfLauncherIcon, unsigned int>, void, unsigned int>::call_it(sigc::internal::slot_rep*, unsigned int const&) () from /usr/lib/compiz/libunityshell.so
#14 0x015dd82d in PluginAdapter::Notify(CompWindow*, CompWindowNotify) ()
---Type <return> to continue, or q <return> to quit---
   from /usr/lib/compiz/libunityshell.so
#15 0x0163b302 in UnityWindow::windowNotify(CompWindowNotify) ()
   from /usr/lib/compiz/libunityshell.so
#16 0x0807d7e3 in CompWindow::windowNotify(CompWindowNotify) ()
#17 0x01642adf in compiz::CompizMinimizedWindowHandler<UnityScreen, UnityWindow>::minimize() () from /usr/lib/compiz/libunityshell.so
#18 0x01642bce in compiz::CompizMinimizedWindowHandler<UnityScreen, UnityWindow>::minimize() () from /usr/lib/compiz/libunityshell.so
#19 0x01642bce in compiz::CompizMinimizedWindowHandler<UnityScreen, UnityWindow>::minimize() () from /usr/lib/compiz/libunityshell.so
...