Application that crashed: akregator
Version of the application: 1.5.3
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-18-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
In my case, akregator's crashes are independen from the update. 
Doing
for i in http___*; do cat /dev/null > $i; done
in ~/.kde/share/apps/akregator/Archive
makes akregator start normally.

 -- Backtrace:
Application: Akregator (akregator), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7804700 (LWP 7479))]

Thread 2 (Thread 0xb4a9eb70 (LWP 7482)):
#0  0x00201422 in __kernel_vsyscall ()
#1  0x00bbb142 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_timedwait.S:179
#2  0x02d1e8d4 in __pthread_cond_timedwait (cond=0x9496f48, mutex=0x9496f30, abstime=0xb4a9e2a0) at forward.c:152
#3  0x017aadef in QWaitConditionPrivate::wait (this=0x94973b8, mutex=0x94973b4, time=30000) at thread/qwaitcondition_unix.cpp:85
#4  QWaitCondition::wait (this=0x94973b8, mutex=0x94973b4, time=30000) at thread/qwaitcondition_unix.cpp:159
#5  0x0179f9ae in QThreadPoolThread::run (this=0x9437688) at concurrent/qthreadpool.cpp:140
#6  0x017a9e32 in QThreadPrivate::start (arg=0x9437688) at thread/qthread_unix.cpp:188
#7  0x00bb680e in start_thread (arg=0xb4a9eb70) at pthread_create.c:300
#8  0x02d118de in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb7804700 (LWP 7479)):
[KCrash Handler]
#6  0x02de70ca in c4_PtrArray::SetAt (this=0x955c3a8, ptr_=0xbf97a9dc) at ../../../../akregator/plugins/mk4storage/metakit/src/univ.inl:60
#7  c4_FormatB::Define (this=0x955c3a8, ptr_=0xbf97a9dc) at ../../../../akregator/plugins/mk4storage/metakit/src/format.cpp:410
#8  0x02de954a in c4_HandlerSeq::Prepare (this=0x955b490, ptr_=0xbf97a9dc, selfDesc_=false) at ../../../../akregator/plugins/mk4storage/metakit/src/handler.cpp:321
#9  0x02de6ab6 in c4_FormatV::SetupAllSubviews (this=0x955b0f0) at ../../../../akregator/plugins/mk4storage/metakit/src/format.cpp:963
#10 0x02de6ee0 in c4_FormatV::Get (this=0x955b0f0, index_=0, length_=@0xbf97aa5c) at ../../../../akregator/plugins/mk4storage/metakit/src/format.cpp:1027
#11 0x02de9026 in c4_Handler::GetBytes (this=0x955b0f0, index_=0, buf_=..., copySmall_=false) at ../../../../akregator/plugins/mk4storage/metakit/src/handler.cpp:53
#12 0x02df6f0b in c4_Sequence::Get (this=0x955b518, index_=0, propId_=37, buf_=...) at ../../../../akregator/plugins/mk4storage/metakit/src/viewx.cpp:319
#13 0x02df82e0 in c4_Reference::GetData (this=0xbf97ab30) at ../../../../akregator/plugins/mk4storage/metakit/include/mk4.inl:421
#14 c4_ViewRef::operator c4_View (this=0xbf97ab30) at ../../../../akregator/plugins/mk4storage/metakit/src/viewx.cpp:587
#15 0x02df1655 in c4_Storage::Description (this=0x955a1c0, name_=0x955aa4a "articles") at ../../../../akregator/plugins/mk4storage/metakit/src/store.cpp:342
#16 0x02df2241 in c4_Storage::GetAs (this=0x955a1c0, 
    description_=0x2e02498 "articles[guid:S,title:S,hash:I,guidIsHash:I,guidIsPermaLink:I,description:S,link:S,comments:I,commentsLink:S,status:I,pubDate:I,tags[tag:S],hasEnclosure:I,enclosureUrl:S,enclosureType:S,enclosureLengt"...) at ../../../../akregator/plugins/mk4storage/metakit/src/store.cpp:261
#17 0x02dfd940 in FeedStorageMK4Impl (this=0x955a1a0, url=..., main=0x91355e0) at ../../../../akregator/plugins/mk4storage/feedstoragemk4impl.cpp:154
#18 0x02e0058e in Akregator::Backend::StorageMK4Impl::StorageMK4ImplPrivate::createFeedStorage (this=0x90d96a0, url=...) at ../../../../akregator/plugins/mk4storage/storagemk4impl.cpp:77
#19 0x02e00b9b in Akregator::Backend::StorageMK4Impl::archiveFor (this=0x91355e0, url=...) at ../../../../akregator/plugins/mk4storage/storagemk4impl.cpp:97
#20 0x020b7918 in Akregator::Feed::loadArticles (this=0x955a980) at ../../../akregator/src/feed.cpp:234
#21 0x020bb793 in Akregator::Feed::fromOPML (e=..., storage=0x91355e0) at ../../../akregator/src/feed.cpp:174
#22 0x020c6b6d in Akregator::FeedList::parseChildNodes (this=0x934bb08, node=..., parent=0x949f1a0) at ../../../akregator/src/feedlist.cpp:237
#23 0x020c856c in Akregator::FeedList::readFromOpml (this=0x934bb08, doc=...) at ../../../akregator/src/feedlist.cpp:295
#24 0x0210cd58 in Akregator::LoadFeedListCommand::Private::handleDocument (this=0x90f3b40, doc=...) at ../../../akregator/src/loadfeedlistcommand.cpp:68
#25 0x0210d89a in Akregator::LoadFeedListCommand::Private::doLoad (this=0x90f3b40) at ../../../akregator/src/loadfeedlistcommand.cpp:173
#26 0x0210dcd3 in Akregator::LoadFeedListCommand::qt_metacall (this=0x9105180, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0xbf97b3fc) at ./loadfeedlistcommand.moc:72
#27 0x018b0263 in QMetaObject::activate (sender=0x93f2b18, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#28 0x018b0ec2 in QMetaObject::activate (sender=0x93f2b18, m=0x198a908, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#29 0x018b5387 in QSingleShotTimer::timeout (this=0x93f2b18) at .moc/release-shared/qtimer.moc:76
#30 0x018b549c in QSingleShotTimer::timerEvent (this=0x93f2b18) at kernel/qtimer.cpp:298
#31 0x018aa3bf in QObject::event (this=0x93f2b18, e=0xbf97b890) at kernel/qobject.cpp:1075
#32 0x00eddf54 in QApplicationPrivate::notify_helper (this=0x9074c08, receiver=0x93f2b18, e=0xbf97b890) at kernel/qapplication.cpp:4056
#33 0x00ee567c in QApplication::notify (this=0xbf97bbd8, receiver=0x93f2b18, e=0xbf97b890) at kernel/qapplication.cpp:3603
#34 0x004ee1aa in KApplication::notify (this=0xbf97bbd8, receiver=0x93f2b18, event=0xbf97b890) at ../../kdeui/kernel/kapplication.cpp:302
#35 0x0189a6cb in QCoreApplication::notifyInternal (this=0xbf97bbd8, receiver=0x93f2b18, event=0xbf97b890) at kernel/qcoreapplication.cpp:610
#36 0x018c77ce in QCoreApplication::sendEvent (this=0x9070894) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#37 QTimerInfoList::activateTimers (this=0x9070894) at kernel/qeventdispatcher_unix.cpp:572
#38 0x018c50e0 in timerSourceDispatch (source=0x9070860) at kernel/qeventdispatcher_glib.cpp:165
#39 0x05651e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#40 0x05655730 in ?? () from /lib/libglib-2.0.so.0
#41 0x05655863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#42 0x018c502c in QEventDispatcherGlib::processEvents (this=0x904ed60, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#43 0x00f7ebe5 in QGuiEventDispatcherGlib::processEvents (this=0x904ed60, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#44 0x01898c79 in QEventLoop::processEvents (this=0xbf97bb54, flags=) at kernel/qeventloop.cpp:149
#45 0x018990ca in QEventLoop::exec (this=0xbf97bb54, flags=...) at kernel/qeventloop.cpp:201
#46 0x0189b53f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#47 0x00edddd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#48 0x0804f981 in main (argc=5, argv=0xbf97bd34) at ../../../akregator/src/main.cpp:103

This bug may be a duplicate of or related to bug 223023

Reported using DrKonqi