Version:            (using KDE 4.1.3)
OS:                Linux
Installed from:    Debian testing/unstable Packages

I open chm file and then click to reviews tab:

Application: Okular (okular), signal SIGSEGV
[Thread debugging using libthread_db enabled]
[New Thread 0xb626d6f0 (LWP 4560)]
[KCrash handler]
#6  Okular::Page::hasAnnotations (this=0x911e078)
    at /tmp/buildd/kdegraphics-4.1.3/okular/core/page.cpp:260
#7  0xb70f55ab in QWidget::event (this=0x911e078, event=0xbfcd4bbc)
    at kernel/qwidget.cpp:7301
#8  0xb7428ca3 in QFrame::event (this=0x911e078, e=0xbfcd4bbc)
    at widgets/qframe.cpp:651
#9  0xb74bf3cf in QAbstractScrollArea::viewportEvent (this=0x911e078, 
    e=0x9413ca8) at widgets/qabstractscrollarea.cpp:943
#10 0xb756a88f in QAbstractItemView::viewportEvent (this=0x911e078, 
    event=0xbfcd4bbc) at itemviews/qabstractitemview.cpp:1429
#11 0xb75a25f4 in QTreeView::viewportEvent (this=0x911e078, event=0xbfcd4bbc)
    at itemviews/qtreeview.cpp:1265
#12 0xb74c1975 in QAbstractScrollAreaFilter::eventFilter (this=0x9130230, 
    o=0x91295f8, e=0xbfcd4bbc) at widgets/qabstractscrollarea_p.h:96
#13 0xb6e7c2ba in QCoreApplicationPrivate::sendThroughObjectEventFilters (
    this=0x904ac08, receiver=0x91295f8, event=0xbfcd4bbc)
    at kernel/qcoreapplication.cpp:694
#14 0xb709d77a in QApplicationPrivate::notify_helper (this=0x904ac08, 
    receiver=0x91295f8, e=0xbfcd4bbc) at kernel/qapplication.cpp:3799
#15 0xb70a56ea in QApplication::notify (this=0xbfcd7e18, receiver=0x91295f8, 
    e=0xbfcd4bbc) at kernel/qapplication.cpp:3768
#16 0xb7c8707d in KApplication::notify (this=0xbfcd7e18, receiver=0x91295f8, 
    event=0xbfcd4bbc)
    at /tmp/buildd/kde4libs-4.1.3/kdeui/kernel/kapplication.cpp:311
#17 0xb6e7d0d1 in QCoreApplication::notifyInternal (this=0xbfcd7e18, 
    receiver=0x91295f8, event=0xbfcd4bbc) at kernel/qcoreapplication.cpp:587
#18 0xb70fe1ee in qt_sendSpontaneousEvent (receiver=0x91295f8, 
    event=0x9413ca8)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:212
#19 0xb70f3f70 in QWidgetPrivate::drawWidget (this=0x911cfd0, pdev=0x90a87cc, 
    rgn=@0xbfcd4d6c, offset=@0xbfcd4d64, flags=<value optimized out>, 
    sharedPainter=0x996a318) at kernel/qwidget.cpp:4636
#20 0xb70f471c in QWidgetPrivate::paintSiblingsRecursive (this=0x916b8d8, 
    pdev=0x90a87cc, siblings=@0xbfcd4ec0, index=9, rgn=@0xbfcd4f9c, 
    offset=@0xbfcd4f94, flags=4, sharedPainter=0x996a318)
    at kernel/qwidget.cpp:4735
#21 0xb70f3be8 in QWidgetPrivate::drawWidget (this=0x916b8d8, pdev=0x90a87cc, 
    rgn=@0xbfcd4f9c, offset=@0xbfcd4f94, flags=4, sharedPainter=0x996a318)
    at kernel/qwidget.cpp:4677
#22 0xb70f471c in QWidgetPrivate::paintSiblingsRecursive (this=0x912dfd0, 
    pdev=0x90a87cc, siblings=@0xbfcd5270, index=1, rgn=@0xbfcd505c, 
    offset=@0xbfcd5344, flags=4, sharedPainter=0x996a318)
    at kernel/qwidget.cpp:4735
#23 0xb70f4622 in QWidgetPrivate::paintSiblingsRecursive (this=0x912dfd0, 
    pdev=0x90a87cc, siblings=@0xbfcd5270, index=2, rgn=@0xbfcd511c, 
    offset=@0xbfcd5344, flags=4, sharedPainter=0x996a318)
    at kernel/qwidget.cpp:4725
#24 0xb70f4622 in QWidgetPrivate::paintSiblingsRecursive (this=0x912dfd0, 
    pdev=0x90a87cc, siblings=@0xbfcd5270, index=3, rgn=@0xbfcd534c, 
    offset=@0xbfcd5344, flags=4, sharedPainter=0x996a318)
    at kernel/qwidget.cpp:4725
#25 0xb70f3be8 in QWidgetPrivate::drawWidget (this=0x912dfd0, pdev=0x90a87cc, 
    rgn=@0xbfcd534c, offset=@0xbfcd5344, flags=4, sharedPainter=0x996a318)
    at kernel/qwidget.cpp:4677
#26 0xb70f471c in QWidgetPrivate::paintSiblingsRecursive (this=0x91174c8, 
    pdev=0x90a87cc, siblings=@0xbfcd54a0, index=5, rgn=@0xbfcd557c, 
    offset=@0xbfcd5574, flags=4, sharedPainter=0x996a318)
    at kernel/qwidget.cpp:4735
#27 0xb70f3be8 in QWidgetPrivate::drawWidget (this=0x91174c8, pdev=0x90a87cc, 
    rgn=@0xbfcd557c, offset=@0xbfcd5574, flags=4, sharedPainter=0x996a318)
    at kernel/qwidget.cpp:4677
#28 0xb70f471c in QWidgetPrivate::paintSiblingsRecursive (this=0x9116f78, 
    pdev=0x90a87cc, siblings=@0xbfcd56d0, index=2, rgn=@0xbfcd57ac, 
    offset=@0xbfcd57a4, flags=4, sharedPainter=0x996a318)
    at kernel/qwidget.cpp:4735
#29 0xb70f3be8 in QWidgetPrivate::drawWidget (this=0x9116f78, pdev=0x90a87cc, 
    rgn=@0xbfcd57ac, offset=@0xbfcd57a4, flags=4, sharedPainter=0x996a318)
    at kernel/qwidget.cpp:4677
#30 0xb70f471c in QWidgetPrivate::paintSiblingsRecursive (this=0x9116e28, 
    pdev=0x90a87cc, siblings=@0xbfcd5900, index=3, rgn=@0xbfcd59dc, 
    offset=@0xbfcd59d4, flags=4, sharedPainter=0x996a318)
    at kernel/qwidget.cpp:4735
#31 0xb70f3be8 in QWidgetPrivate::drawWidget (this=0x9116e28, pdev=0x90a87cc, 
    rgn=@0xbfcd59dc, offset=@0xbfcd59d4, flags=4, sharedPainter=0x996a318)
    at kernel/qwidget.cpp:4677
#32 0xb70f471c in QWidgetPrivate::paintSiblingsRecursive (this=0x90f78e0, 
    pdev=0x90a87cc, siblings=@0xbfcd5b30, index=2, rgn=@0xbfcd5c0c, 
    offset=@0xbfcd5c04, flags=4, sharedPainter=0x996a318)
    at kernel/qwidget.cpp:4735
#33 0xb70f3be8 in QWidgetPrivate::drawWidget (this=0x90f78e0, pdev=0x90a87cc, 
    rgn=@0xbfcd5c0c, offset=@0xbfcd5c04, flags=4, sharedPainter=0x996a318)
    at kernel/qwidget.cpp:4677
#34 0xb70f471c in QWidgetPrivate::paintSiblingsRecursive (this=0x90a79c8, 
    pdev=0x90a87cc, siblings=@0xbfcd5d60, index=22, rgn=@0xbfcd5e54, 
    offset=@0x90541ec, flags=4, sharedPainter=0x996a318)
    at kernel/qwidget.cpp:4735
#35 0xb70f3be8 in QWidgetPrivate::drawWidget (this=0x90a79c8, pdev=0x90a87cc, 
    rgn=@0xbfcd5e54, offset=@0x90541ec, flags=4, sharedPainter=0x996a318)
    at kernel/qwidget.cpp:4677
#36 0xb7261aae in QWidgetBackingStore::cleanRegion (this=0x90541e0, 
    rgn=@0xbfcd5ea8, widget=0x90ac5c8, recursiveCopyToScreen=true)
    at painting/qbackingstore.cpp:1035
#37 0xb7261f77 in qt_syncBackingStore (widget=0x90ac5c8)
    at painting/qbackingstore.cpp:313
#38 0xb70f53d6 in QWidget::event (this=0x90ac5c8, event=0x97b00d8)
    at kernel/qwidget.cpp:7447
#39 0xb74451c7 in QMainWindow::event (this=0x90ac5c8, event=0x97b00d8)
    at widgets/qmainwindow.cpp:1268
#40 0xb7d57f98 in KMainWindow::event (this=0x90ac5c8, ev=0x97b00d8)
    at /tmp/buildd/kde4libs-4.1.3/kdeui/widgets/kmainwindow.cpp:1073
#41 0xb7d9b75c in KXmlGuiWindow::event (this=0x90ac5c8, ev=0x97b00d8)
    at /tmp/buildd/kde4libs-4.1.3/kdeui/xmlgui/kxmlguiwindow.cpp:133
#42 0xb709d79c in QApplicationPrivate::notify_helper (this=0x904ac08, 
    receiver=0x90ac5c8, e=0x97b00d8) at kernel/qapplication.cpp:3803
#43 0xb70a56ea in QApplication::notify (this=0xbfcd7e18, receiver=0x90ac5c8, 
    e=0x97b00d8) at kernel/qapplication.cpp:3768
#44 0xb7c8707d in KApplication::notify (this=0xbfcd7e18, receiver=0x90ac5c8, 
    event=0x97b00d8)
    at /tmp/buildd/kde4libs-4.1.3/kdeui/kernel/kapplication.cpp:311
#45 0xb6e7d0d1 in QCoreApplication::notifyInternal (this=0xbfcd7e18, 
    receiver=0x90ac5c8, event=0x97b00d8) at kernel/qcoreapplication.cpp:587
#46 0xb6e7dd55 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, 
    event_type=0, data=0x9041288)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:209
#47 0xb6e7df4d in QCoreApplication::sendPostedEvents (receiver=0x0, 
    event_type=0) at kernel/qcoreapplication.cpp:1091
#48 0xb6ea798f in postEventSourceDispatch (s=0x904cd10)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:214
#49 0xb65c8348 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#50 0xb65cb9e3 in ?? () from /usr/lib/libglib-2.0.so.0
#51 0x0904cc90 in ?? ()
#52 0x00000000 in ?? ()
#0  0xffffe424 in __kernel_vsyscall ()