#0  0xb7f07756 in pkgRecords::Lookup (this=0x8531d58, Ver=@0xbfe070c0) at pkgrecords.cc:60
  [Error: pkgrecords.cc was not found in source tree]
#1  0x080fb4c7 in pkg_description_widget::set_package (this=0x84cc500, pkg=@0x84cd840, ver=@0x84cd84c)
#2  0x080fc2b4 in info_area_multiplex::set_package (this=0x84cd790, pkg=@0x84cd840, ver=@0x84cd84c)
#3  0x080fc615 in info_area_multiplex::reset_package (this=0x84cd790) at pkg_view.cc:447
  442:   /** Re-updates the package views, given that the package state may
  443:    *  have changed.
  444:    */
  445:   void reset_package()
  446:   {
  447:     set_package(lastPkg, lastVer);
  448:   }
  449: 
  450:   /** Set the description directly, without reference to a package.
  451:    *  Used when no package is selected.
  452:    *
#4  0x0811db92 in do_mark_upgradable () at /usr/include/sigc++-2.0/sigc++/signal.h:550
  [Error: /usr/include/sigc++-2.0/sigc++/signal.h was not found in source tree]
#5  0xb7e4d192 in cwidget::widgets::widget::handle_key (this=0x82e9420, k=@0xbfe07408)
#6  0xb7e289a8 in cwidget::widgets::passthrough::handle_key (this=0x82e9420, k=@0xbfe07408)
#7  0xb7e4cf09 in cwidget::widgets::widget::dispatch_key (this=0x82e9420, k=@0xbfe07408) at widget.cc:267
  [Error: widget.cc was not found in source tree]
#8  0xb7e14381 in cwidget::widgets::menubar::handle_key (this=0x82dbc20, k=@0xbfe07408) at menubar.cc:639
  [Error: menubar.cc was not found in source tree]
#9  0xb7e4cf09 in cwidget::widgets::widget::dispatch_key (this=0x82dbc20, k=@0xbfe07408) at widget.cc:267
  [Error: widget.cc was not found in source tree]
#10 0xb7de1d3d in cwidget::toplevel::input_thread::get_input_event::dispatch (this=0x862fe18)
#11 0xb7dda575 in cwidget::toplevel::mainloop (synch=0) at toplevel.cc:1040
  [Error: toplevel.cc was not found in source tree]
#12 0x0811ec18 in ui_main () at ui.cc:2667
  2662:   maybe_show_old_tmpdir_message();
  2663: }
  2664: 
  2665: void ui_main()
  2666: {
  2667:   cw::toplevel::mainloop();
  2668: 
  2669:   if(apt_cache_file &&
  2670:      (aptitudeDepCache *) (*apt_cache_file) &&
  2671:      apt_cache_file->is_locked())
  2672:     {
#13 0x080618a8 in main (argc=) at main.cc:588
  583:       ui_main();
  584:     }
  585:   catch(const cwidget::util::Exception &e)
  586:     {
  587:       cw::toplevel::shutdown();
  588: 
  589:       fprintf(stderr, _("Uncaught exception: %s\n"), e.errmsg().c_str());
  590: 
  591:       std::string backtrace = e.get_backtrace();
  592:       if(!backtrace.empty())
  593: 	fprintf(stderr, _("Backtrace:\n%s"), backtrace.c_str());
#14 0xb7b11450 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#15 0x0805fc61 in _start ()