I have the same problem with KDE 4.1.0 from Kubuntu Members PPA in Hardy, like G. Christ in comment #40. Here my backtrace (without "(no debugging symbols found)": Application: Akregator (akregator), signal SIGSEGV [Thread debugging using libthread_db enabled] [New Thread 0xb545c720 (LWP 6958)] [KCrash handler] #6 0xb3d65b29 in ?? () from /usr/lib/kde4/lib/kde4/akregatorpart.so #7 0xb3d65be1 in ?? () from /usr/lib/kde4/lib/kde4/akregatorpart.so #8 0xb3d61454 in Akregator::FeedList::findByURL () from /usr/lib/kde4/lib/kde4/akregatorpart.so #9 0xb3d6270c in Akregator::FeedList::findArticle () from /usr/lib/kde4/lib/kde4/akregatorpart.so #10 0xb3d4966a in ?? () from /usr/lib/kde4/lib/kde4/akregatorpart.so #11 0xb3d49853 in ?? () from /usr/lib/kde4/lib/kde4/akregatorpart.so #12 0xb77f24f9 in QMetaObject::activate () from /usr/lib/libQtCore.so.4 #13 0xb77f2bc2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4 #14 0xb77f9037 in ?? () from /usr/lib/libQtCore.so.4 #15 0xb77f915c in ?? () from /usr/lib/libQtCore.so.4 #16 0xb77edc9a in QObject::event () from /usr/lib/libQtCore.so.4 #17 0xb6e3dc0c in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4 #18 0xb6e427a9 in QApplication::notify () from /usr/lib/libQtGui.so.4 #19 0xb7c74f53 in KApplication::notify () from /usr/lib/kde4/lib/libkdeui.so.5 #20 0xb77dd6a9 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4 #21 0xb780b1a1 in ?? () from /usr/lib/libQtCore.so.4 #22 0xb7808a40 in ?? () from /usr/lib/libQtCore.so.4 #23 0xb5bf9dd6 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0 #24 0xb5bfd193 in ?? () from /usr/lib/libglib-2.0.so.0 #25 0xb5bfd74e in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0 #26 0xb7808f98 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4 #27 0xb6ed11b5 in ?? () from /usr/lib/libQtGui.so.4 #28 0xb77dc92d in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4 #29 0xb77dcabd in QEventLoop::exec () from /usr/lib/libQtCore.so.4 #30 0xb77ded3d in QCoreApplication::exec () from /usr/lib/libQtCore.so.4 #31 0xb6e3d567 in QApplication::exec () from /usr/lib/libQtGui.so.4 #32 0x0804edab in _start () #0 0xb7f3f410 in __kernel_vsyscall () and here terminal messages when i run akregator: othmane@kubuntu:~/Desktop$ akregator akregator(6958) Akregator::PluginManager::query: Plugin trader constraint: "[X-KDE-akregator-framework-version] == 2 and [X-KDE-akregator-plugintype] == 'storage' and [X-KDE-akregator-rank] > 0" akregator(6958) Akregator::PluginManager::createFromService: Trying to load: "akregator_mk4storage_plugin" akregator(6958) Akregator::PluginManager::dump: PluginManager Service Info: --------------------------- name : "Metakit storage backend" library : "akregator_mk4storage_plugin" desktopEntryPath : "akregator_mk4storage_plugin.desktop" X-KDE-akregator-plugintype : "storage" X-KDE-akregator-name : "metakit" X-KDE-akregator-authors : ("Frank Osterfeld") X-KDE-akregator-rank : "255" X-KDE-akregator-version : "1" X-KDE-akregator-framework-version: "2" Object::connect: No such signal Akregator::SubscriptionListView::signalContextMenu(K3ListView*,Akregator::TreeNode*,QPoint) Object::connect: (sender name: 'feedtree') Object::connect: (receiver name: 'akregator_view') Object::connect: No such signal Akregator::SubscriptionListView::signalDropped(KUrl::List&,Akregator::TreeNode*,Akregator::Folder*) Object::connect: (sender name: 'feedtree') Object::connect: (receiver name: 'akregator_view') Object::connect: No such slot Akregator::ArticleListView::slotPaletteOrFontChanged() akregator(6958) Akregator::SubscriptionListView::loadHeaderSettings: 0 210 akregator(6958) Akregator::SubscriptionListView::loadHeaderSettings: 1 56 akregator(6958) Akregator::SubscriptionListView::loadHeaderSettings: 2 58 Object::disconnect: Unexpected null parameter akregator(6958) Akregator::Part::initFonts: Part::initFonts(): set UnderlineLinks to true akregator(6958) Akregator::FeedList::readFromOpml: loading OPML feed "opml" akregator(6958) Akregator::FeedList::readFromOpml: measuring startup time: START akregator(6958) Akregator::Backend::FeedStorageMK4Impl::FeedStorageMK4Impl: "http://feeds.feedburner.com/7yearwinter" akregator(6958) Akregator::Backend::FeedStorageMK4Impl::FeedStorageMK4Impl: "http://feeds.feedburner.com/Blu" akregator(6958) Akregator::Backend::FeedStorageMK4Impl::FeedStorageMK4Impl: "http://feeds.feedburner.com/oneOpenSource" akregator(6958) Akregator::Backend::FeedStorageMK4Impl::FeedStorageMK4Impl: "http://feeds.feedburner.com/pollycokenet" akregator(6958) Akregator::Backend::FeedStorageMK4Impl::FeedStorageMK4Impl: "http://www.kde.org/dotkdeorg.rdf" akregator(6958) Akregator::Backend::FeedStorageMK4Impl::FeedStorageMK4Impl: "http://www.kubuntu.org/news/feed" akregator(6958) Akregator::Backend::FeedStorageMK4Impl::FeedStorageMK4Impl: "http://pinheiro-kde.blogspot.com/feeds/posts/default" akregator(6958) Akregator::Backend::FeedStorageMK4Impl::FeedStorageMK4Impl: "http://aseigo.blogspot.com/feeds/posts/default" akregator(6958) Akregator::Backend::FeedStorageMK4Impl::FeedStorageMK4Impl: "http://www.repubblica.it/rss/homepage/rss2.0.xml" akregator(6958) Akregator::Backend::FeedStorageMK4Impl::FeedStorageMK4Impl: "http://www.corriere.it/rss/homepage.xml" akregator(6958) Akregator::Backend::FeedStorageMK4Impl::FeedStorageMK4Impl: "http://www.lastampa.it/redazione/rss_home.xml" akregator(6958) Akregator::FeedList::readFromOpml: measuring startup time: STOP, 556 ms akregator(6958) Akregator::FeedList::readFromOpml: Number of articles loaded: 1019 akregator(6958) Akregator::SubscriptionListView::loadHeaderSettings: 0 210 akregator(6958) Akregator::SubscriptionListView::loadHeaderSettings: 1 56 akregator(6958) Akregator::SubscriptionListView::loadHeaderSettings: 2 58 KCrash: crashing... crashRecursionCounter = 2 KCrash: Application Name = akregator path = pid = 6958 sock_file=/home/othmane/.kde4/socket-kubuntu/kdeinit4__0 I think the same thing of G.Christ in comment #43.