Version:            (using Devel)
Installed from:    Compiled sources
Compiler:          gcc (SUSE Linux) 4.3.1 20080507 (prerelease) [gcc-4_3-branch revision 135036] 
OS:                Linux

Since a few days kmail reproducably crashes on synching my disconnected IMAP account with an assertion in KIO::SchedulerPrivate:

kmail: /home/andre/kde/src/kdelibs/kio/kio/scheduler.cpp:950: bool KIO::SchedulerPrivate::assignJobToSlave(KIO::Slave*, KIO::SimpleJob*): Assertion `list' failed.

Program received signal SIGABRT, Aborted.
[Switching to Thread 0x7f0036183700 (LWP 5176)]
0x00007f002942b5a5 in raise () from /lib64/libc.so.6
(gdb) bt
#0  0x00007f002942b5a5 in raise () from /lib64/libc.so.6
#1  0x00007f002942cb93 in abort () from /lib64/libc.so.6
#2  0x00007f00294241c9 in __assert_fail () from /lib64/libc.so.6
#3  0x00007f002e7ab6f1 in KIO::SchedulerPrivate::assignJobToSlave (this=0x1394b60, slave=0x1868ac0, job=0x727bb0) at /home/andre/kde/src/kdelibs/kio/kio/scheduler.cpp:950
#4  0x00007f002e7adcf2 in KIO::Scheduler::assignJobToSlave (slave=0x1868ac0, job=0x727bb0) at /home/andre/kde/src/kdelibs/kio/kio/scheduler.cpp:291
#5  0x00007f003404e3f4 in KMail::ImapAccountBase::slotNoopTimeout (this=0x13da130) at /home/andre/kde/src/kdepim/kmail/imapaccountbase.cpp:581
#6  0x00007f00340526d8 in KMail::ImapAccountBase::qt_metacall (this=0x13da130, _c=QMetaObject::InvokeMetaMethod, _id=17, _a=0x7fff3e1d3060) at /home/andre/kde/build/kdepim/kmail/imapaccountbase.moc:134
#7  0x00007f003406271f in KMAcctCachedImap::qt_metacall (this=0x13da130, _c=QMetaObject::InvokeMetaMethod, _id=27, _a=0x7fff3e1d3060) at /home/andre/kde/build/kdepim/kmail/kmacctcachedimap.moc:77
#8  0x00007f0035cdfbc6 in QMetaObject::activate (sender=0x13da260, from_signal_index=<value optimized out>, to_signal_index=4, argv=0xffffffffffffffff) at kernel/qobject.cpp:3001
#9  0x00007f0035cda605 in QObject::event (this=0x13da260, e=0x1438) at kernel/qobject.cpp:1096
#10 0x00007f002aa777ff in QApplicationPrivate::notify_helper (this=0x634e50, receiver=0x13da260, e=0x7fff3e1d36c0) at kernel/qapplication.cpp:3766
#11 0x00007f002aa7c3c5 in QApplication::notify (this=0x7fff3e1d3b40, receiver=0x13da260, e=0x7fff3e1d36c0) at kernel/qapplication.cpp:3733
#12 0x00007f00306d51b6 in KApplication::notify (this=0x7fff3e1d3b40, receiver=0x13da260, event=0x7fff3e1d36c0) at /home/andre/kde/src/kdelibs/kdeui/kernel/kapplication.cpp:311
#13 0x00007f0035ccba59 in QCoreApplication::notifyInternal (this=0x7fff3e1d3b40, receiver=0x13da260, event=0x7fff3e1d36c0) at kernel/qcoreapplication.cpp:587
#14 0x00007f0035cf6d7c in QTimerInfoList::activateTimers (this=0x6383c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#15 0x00007f0035cf48ed in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:166
#16 0x00007f0028d6193a in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#17 0x00007f0028d65040 in ?? () from /usr/lib64/libglib-2.0.so.0
#18 0x00007f0028d651dc in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#19 0x00007f0035cf4d4f in QEventDispatcherGlib::processEvents (this=0x627280, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:325
#20 0x00007f002aaff0ff in QGuiEventDispatcherGlib::processEvents (this=0x1438, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#21 0x00007f0035ccaeb5 in QEventLoop::processEvents (this=<value optimized out>, flags=@0x7fff3e1d3930) at kernel/qeventloop.cpp:149
#22 0x00007f0035ccb00b in QEventLoop::exec (this=0x7fff3e1d3970, flags=@0x7fff3e1d3980) at kernel/qeventloop.cpp:200
#23 0x00007f0035ccd089 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:845
#24 0x00000000004041b6 in main (argc=2, argv=0x7fff3e1d3cf8) at /home/andre/kde/src/kdepim/kmail/main.cpp:132