Version:           sconosciuto (using 4.1.96 (KDE 4.1.96 (KDE 4.2 RC1)) "release 78.1", KDE:KDE4:Factory:Desktop / openSUSE_11.0)
Compiler:          gcc
OS:                Linux (i686) release 2.6.25.20-0.1-pae

After updating to the newest version of kontact on Opensuse 11.0, it started crashing every time I try to get to the ToDo, Calendar and Diary applications.

This is the backtrace:
Applicazione: Kontact (kontact), segnale SIGSEGV
[Current thread is 0 (LWP 3650)]

Thread 2 (Thread 0xb0a25b90 (LWP 3659)):
#0  0xffffe430 in __kernel_vsyscall ()
#1  0xb5b83ed1 in select () from /lib/libc.so.6
#2  0xb6879e77 in ?? () from /usr/lib/libQtCore.so.4
#3  0xb67aa84e in ?? () from /usr/lib/libQtCore.so.4
#4  0xb674a175 in start_thread () from /lib/libpthread.so.0
#5  0xb5b8adae in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb4bd1a60 (LWP 3650)):
[KCrash Handler]
#6  0xb67b5e67 in QDate::isValid () from /usr/lib/libQtCore.so.4
#7  0xb6a80da3 in KDateTime::isValid () from /usr/lib/libkdecore.so.5
#8  0xb7379d64 in KCal::Todo::dtDue () from /usr/lib/libkcal.so.4
#9  0xb7379e24 in KCal::Todo::isOverdue () from /usr/lib/libkcal.so.4
#10 0xaf85ba00 in ?? () from /usr/lib/libkorganizerprivate.so.4
#11 0xb638c9ae in QSortFilterProxyModel::data () from /usr/lib/libQtGui.so.4
#12 0xb63b1432 in QStyledItemDelegate::initStyleOption () from /usr/lib/libQtGui.so.4
#13 0xb63b22b4 in QStyledItemDelegate::sizeHint () from /usr/lib/libQtGui.so.4
#14 0xaf862f94 in ?? () from /usr/lib/libkorganizerprivate.so.4
#15 0xb63436c1 in QTreeView::indexRowSizeHint () from /usr/lib/libQtGui.so.4
#16 0xb6343a32 in ?? () from /usr/lib/libQtGui.so.4
#17 0xb6343cfe in ?? () from /usr/lib/libQtGui.so.4
#18 0xb6344072 in QTreeView::updateGeometries () from /usr/lib/libQtGui.so.4
#19 0xb6302f79 in QAbstractItemView::doItemsLayout () from /usr/lib/libQtGui.so.4
#20 0xb634f752 in QTreeView::doItemsLayout () from /usr/lib/libQtGui.so.4
#21 0xb630d811 in QAbstractItemView::timerEvent () from /usr/lib/libQtGui.so.4
#22 0xb634e54b in QTreeView::timerEvent () from /usr/lib/libQtGui.so.4
#23 0xb68aa1ff in QObject::event () from /usr/lib/libQtCore.so.4
#24 0xb5e970f4 in QWidget::event () from /usr/lib/libQtGui.so.4
#25 0xb61cee83 in QFrame::event () from /usr/lib/libQtGui.so.4
#26 0xb626647d in QAbstractScrollArea::event () from /usr/lib/libQtGui.so.4
#27 0xb6303adc in QAbstractItemView::event () from /usr/lib/libQtGui.so.4
#28 0xb5e3f82c in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#29 0xb5e4779a in QApplication::notify () from /usr/lib/libQtGui.so.4
#30 0xb6dff66d in KApplication::notify () from /usr/lib/libkdeui.so.5
#31 0xb689aa71 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#32 0xb68c8de6 in ?? () from /usr/lib/libQtCore.so.4
#33 0xb68c52b0 in ?? () from /usr/lib/libQtCore.so.4
#34 0xb52e22d9 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#35 0xb52e585b in ?? () from /usr/lib/libglib-2.0.so.0
#36 0xb52e59d8 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#37 0xb68c5208 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#38 0xb5ed88b5 in ?? () from /usr/lib/libQtGui.so.4
#39 0xb689914a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#40 0xb689930a in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#41 0xb6ab5261 in KJob::exec () from /usr/lib/libkdecore.so.5
#42 0xb0ad8dd2 in ?? () from /usr/lib/kde4/kcal_akonadi.so
#43 0xb0adb2e6 in ?? () from /usr/lib/kde4/kcal_akonadi.so
#44 0xb73e07dd in KCal::ResourceCalendar::load () from /usr/lib/libkcal.so.4
#45 0xb73f2ab1 in KCal::CalendarResources::load () from /usr/lib/libkcal.so.4
#46 0xaf9b68a3 in ?? () from /usr/lib/kde4/korganizerpart.so
#47 0xaf9b7372 in KPluginFactory::createPartInstance<KOrganizerPart> () from /usr/lib/kde4/korganizerpart.so
#48 0xb6baf97c in KPluginFactory::create () from /usr/lib/libkdecore.so.5
#49 0xb78ccc12 in Kontact::Core::createPart () from /usr/lib/libkontactinterfaces.so.4
#50 0xb78ce1d7 in Kontact::Plugin::loadPart () from /usr/lib/libkontactinterfaces.so.4
#51 0xb1c30a55 in ?? () from /usr/lib/kde4/kontact_todoplugin.so
#52 0xb78ce132 in Kontact::Plugin::part () from /usr/lib/libkontactinterfaces.so.4
#53 0xb78ec128 in Kontact::MainWindow::selectPlugin () from /usr/lib/libkontactprivate.so.4
#54 0xb78ebfb4 in Kontact::MainWindow::qt_metacall () from /usr/lib/libkontactprivate.so.4
#55 0xb68af740 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#56 0xb68b04c2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#57 0xb78ee913 in ?? () from /usr/lib/libkontactprivate.so.4
#58 0xb78ee9af in ?? () from /usr/lib/libkontactprivate.so.4
#59 0xb78eec5a in ?? () from /usr/lib/libkontactprivate.so.4
#60 0xb68af740 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#61 0xb68b04c2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#62 0xb78eed43 in ?? () from /usr/lib/libkontactprivate.so.4
#63 0xb78ef6ed in ?? () from /usr/lib/libkontactprivate.so.4
#64 0xb68af740 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#65 0xb68b04c2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#66 0xb6358499 in QItemSelectionModel::currentChanged () from /usr/lib/libQtGui.so.4
#67 0xb635863d in QItemSelectionModel::setCurrentIndex () from /usr/lib/libQtGui.so.4
#68 0xb630a56a in QAbstractItemView::mousePressEvent () from /usr/lib/libQtGui.so.4
#69 0xb5e97a39 in QWidget::event () from /usr/lib/libQtGui.so.4
#70 0xb61cee83 in QFrame::event () from /usr/lib/libQtGui.so.4
#71 0xb62659af in QAbstractScrollArea::viewportEvent () from /usr/lib/libQtGui.so.4
#72 0xb6310bcf in QAbstractItemView::viewportEvent () from /usr/lib/libQtGui.so.4
#73 0xb6267f55 in ?? () from /usr/lib/libQtGui.so.4
#74 0xb6899c4a in QCoreApplicationPrivate::sendThroughObjectEventFilters () from /usr/lib/libQtCore.so.4
#75 0xb5e3f80a in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#76 0xb5e48081 in QApplication::notify () from /usr/lib/libQtGui.so.4
#77 0xb6dff66d in KApplication::notify () from /usr/lib/libkdeui.so.5
#78 0xb689aa71 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#79 0xb5e4730e in QApplicationPrivate::sendMouseEvent () from /usr/lib/libQtGui.so.4
#80 0xb5eb1766 in ?? () from /usr/lib/libQtGui.so.4
#81 0xb5eb0b0d in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4
#82 0xb5ed91ec in ?? () from /usr/lib/libQtGui.so.4
#83 0xb52e22d9 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#84 0xb52e585b in ?? () from /usr/lib/libglib-2.0.so.0
#85 0xb52e59d8 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#86 0xb68c5208 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#87 0xb5ed88b5 in ?? () from /usr/lib/libQtGui.so.4
#88 0xb689914a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#89 0xb689930a in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#90 0xb689b9a5 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#91 0xb5e3f6a7 in QApplication::exec () from /usr/lib/libQtGui.so.4
#92 0x0804bf8f in _start ()