Version:           3.5.5 (using KDE 3.5.5, Kubuntu (edgy) 4:3.5.5-0ubuntu3)
Compiler:          Target: i486-linux-gnu
OS:                Linux (i686) release 2.6.17-10-generic

A window contains notification about crash on signal 11 appeared.

Here is the backtrace produced by application:

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Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
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[Thread debugging using libthread_db enabled]
[New Thread -1232578896 (LWP 11335)]
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[KCrash handler]
#6  0xb715f0ac in QPixmap::convertToImage () from /usr/lib/libqt-mt.so.3
#7  0xb77d646c in KWin::setIcons () from /usr/lib/libkdecore.so.4
#8  0xb6c608dd in KMainWindow::setIcon () from /usr/lib/libkdeui.so.4
#9  0xb66b6486 in KonqMainWindow::setIcon ()
   from /usr/lib/libkdeinit_konqueror.so
#10 0xb66c25b8 in KonqMainWindow::setLocationBarURL ()
   from /usr/lib/libkdeinit_konqueror.so
#11 0xb66c26d3 in KonqView::setLocationBarURL ()
   from /usr/lib/libkdeinit_konqueror.so
#12 0xb66de09b in KonqViewManager::setActivePart ()
   from /usr/lib/libkdeinit_konqueror.so
#13 0xb66e04bf in KonqViewManager::clear ()
   from /usr/lib/libkdeinit_konqueror.so
#14 0xb66e06b2 in KonqMainWindow::stayPreloaded ()
   from /usr/lib/libkdeinit_konqueror.so
#15 0xb66e0ae6 in KonqMainWindow::queryExit ()
   from /usr/lib/libkdeinit_konqueror.so
#16 0xb6c38b90 in KMainWindow::shuttingDown () from /usr/lib/libkdeui.so.4
#17 0xb6d99111 in KMainWindow::qt_invoke () from /usr/lib/libkdeui.so.4
#18 0xb7ee1e83 in KParts::MainWindow::qt_invoke ()
   from /usr/lib/libkparts.so.2
#19 0xb66ffd63 in KonqMainWindow::qt_invoke ()
   from /usr/lib/libkdeinit_konqueror.so
#20 0xb7214957 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#21 0xb72153fc in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#22 0xb77bb8ec in KApplication::shutDown () from /usr/lib/libkdecore.so.4
#23 0xb77bb9be in KApplication::xioErrhandler () from /usr/lib/libkdecore.so.4
#24 0xb77bba19 in KApplication::xioErrhandler () from /usr/lib/libkdecore.so.4
#25 0xb6e81f4d in _XIOError () from /usr/lib/libX11.so.6
#26 0xb6e82f06 in _XRead () from /usr/lib/libX11.so.6
#27 0xb6e8487d in _XEventsQueued () from /usr/lib/libX11.so.6
#28 0xb6e70262 in XPending () from /usr/lib/libX11.so.6
#29 0xb7152360 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#30 0xb71c625e in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#31 0xb71c606e in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#32 0xb71ad731 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#33 0xb66fd2b4 in kdemain () from /usr/lib/libkdeinit_konqueror.so
#34 0xb6744524 in kdeinitmain () from /usr/lib/kde3/konqueror.so
#35 0x0804e4df in ?? ()
#36 0x00000004 in ?? ()
#37 0x080cd200 in ?? ()
#38 0x00000001 in ?? ()
#39 0x00000000 in ?? ()

Kind regards, AVS.