Application that crashed: kopete
Version of the application: 0.70.90
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.30-ARCH x86_64
Distribution: "(none)"

What I was doing when the application crashed:
In normal operation, one of the Y! accounts disconnected and on reconnection, crashed. I use two Y! accounts at the same time. 

 -- Backtrace:
Application: Kopete (kopete), signal: Segmentation fault
[Current thread is 0 (LWP 13332)]

Thread 2 (Thread 0x7f6f1d4b3910 (LWP 13341)):
#0  0x00007f6f310c49b3 in poll () from /lib/libc.so.6
#1  0x00007f6f2cd6634c in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#2  0x00007f6f2cd66690 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007f6f3237f22e in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#4  0x00007f6f32355612 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#5  0x00007f6f323559e4 in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#6  0x00007f6f207b93d2 in XMPP::SyncThread::run () from /usr/lib/kde4/kopete_jabber.so
#7  0x00007f6f32271285 in ?? () from /usr/lib/libQtCore.so.4
#8  0x00007f6f30b9d57a in start_thread () from /lib/libpthread.so.0
#9  0x00007f6f310cd16d in clone () from /lib/libc.so.6
#10 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f6f34a7b760 (LWP 13332)):
[KCrash Handler]
#5  0x00007f6f3344fa14 in KIO::TransferJob::isErrorPage () from /usr/lib/libkio.so.5
#6  0x00007f6f20fb670e in YABTask::slotResult () from /usr/lib/libkyahoo.so.1
#7  0x00007f6f20fb7305 in YABTask::qt_metacall () from /usr/lib/libkyahoo.so.1
#8  0x00007f6f3236be0c in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#9  0x00007f6f329b04e2 in KJob::result () from /usr/lib/libkdecore.so.5
#10 0x00007f6f329b085f in KJob::emitResult () from /usr/lib/libkdecore.so.5
#11 0x00007f6f33456a53 in KIO::SimpleJob::slotFinished () from /usr/lib/libkio.so.5
#12 0x00007f6f33456f13 in KIO::TransferJob::slotFinished () from /usr/lib/libkio.so.5
#13 0x00007f6f33455821 in KIO::TransferJob::qt_metacall () from /usr/lib/libkio.so.5
#14 0x00007f6f3236be0c in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#15 0x00007f6f335175d1 in KIO::SlaveInterface::dispatch () from /usr/lib/libkio.so.5
#16 0x00007f6f33513e83 in KIO::SlaveInterface::dispatch () from /usr/lib/libkio.so.5
#17 0x00007f6f33506cad in KIO::Slave::gotInput () from /usr/lib/libkio.so.5
#18 0x00007f6f33508dcc in KIO::Slave::qt_metacall () from /usr/lib/libkio.so.5
#19 0x00007f6f3236be0c in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#20 0x00007f6f33424527 in KIO::ConnectionPrivate::dequeue () from /usr/lib/libkio.so.5
#21 0x00007f6f3342464d in KIO::Connection::qt_metacall () from /usr/lib/libkio.so.5
#22 0x00007f6f32366129 in QObject::event () from /usr/lib/libQtCore.so.4
#23 0x00007f6f31802e2c in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#24 0x00007f6f3180a0fe in QApplication::notify () from /usr/lib/libQtGui.so.4
#25 0x00007f6f32f64ff6 in KApplication::notify () from /usr/lib/libkdeui.so.5
#26 0x00007f6f32356d0c in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#27 0x00007f6f323578ea in QCoreApplicationPrivate::sendPostedEvents () from /usr/lib/libQtCore.so.4
#28 0x00007f6f3237f563 in ?? () from /usr/lib/libQtCore.so.4
#29 0x00007f6f2cd62dbe in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#30 0x00007f6f2cd66568 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#31 0x00007f6f2cd66690 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#32 0x00007f6f3237f1d6 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#33 0x00007f6f31895dde in ?? () from /usr/lib/libQtGui.so.4
#34 0x00007f6f32355612 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#35 0x00007f6f323559e4 in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#36 0x00007f6f32357b99 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#37 0x00000000004154f6 in _start ()

Reported using DrKonqi