Version:            (using KDE 3.5.9)
Installed from:    Gentoo Packages
Compiler:          gcc 4.1.2 x86_64-pc-linux-gnu-4.1.2
OS:                Linux

Kopete (that came with KDE 3.5.9) crashes after a while on start even before it shows the window.

Steps of replication:
1) emerge kde-base/kopete-3.5.9 (from official Gentoo portage tree)
2) run 'kopete'
3) wait a while looking at heavy CPU usage
4) see it crash

I've tested it 5 times with a 100% success rate to make it crash.

Expected behaviour:
* no crashing
* preferably no CPU hogging as well ;)

Kopete Kdbg crash output:

(no debugging symbols found)
Using host libthread_db library "/lib/libthread_db.so.1".
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[KCrash handler]
#5  0x00002b1db3b8d0b5 in raise () from /lib/libc.so.6
#6  0x00002b1db3b8e99e in abort () from /lib/libc.so.6
#7  0x00002b1db3b866cf in __assert_fail () from /lib/libc.so.6
#8  0x00002b1db2581ee2 in ?? () from /lib/libpthread.so.0
#9  0x00002b1db257b5a9 in pthread_mutex_lock () from /lib/libpthread.so.0
#10 0x00002aaaab010f11 in cricket::ThreadManager::Add ()
   from /usr/kde/3.5/lib64/kde3/kopete_jabber.so
#11 0x00002aaaab010f98 in cricket::Thread::Thread ()
   from /usr/kde/3.5/lib64/kde3/kopete_jabber.so
#12 0x00002aaaab011015 in cricket::ThreadManager::ThreadManager ()
   from /usr/kde/3.5/lib64/kde3/kopete_jabber.so
#13 0x00002aaaab011054 in ?? () from /usr/kde/3.5/lib64/kde3/kopete_jabber.so
#14 0x00002aaaab02f4e6 in ?? () from /usr/kde/3.5/lib64/kde3/kopete_jabber.so
#15 0x00000000010b3248 in ?? ()
#16 0x00000000010b2ef0 in ?? ()
#17 0x00000000010b2ef0 in ?? ()
#18 0x00002aaaaaead3db in _init ()
   from /usr/kde/3.5/lib64/kde3/kopete_jabber.so
#19 0x00002aaaab2bb9c0 in speex_info ()
   from /usr/kde/3.5/lib64/kde3/kopete_jabber.so
#20 0x00002b1dab7abfdb in ?? () from /lib64/ld-linux-x86-64.so.2
#21 0x00002b1dab7ac10d in ?? () from /lib64/ld-linux-x86-64.so.2
#22 0x00002b1dab7b00b0 in ?? () from /lib64/ld-linux-x86-64.so.2
#23 0x00002b1dab7abc66 in ?? () from /lib64/ld-linux-x86-64.so.2
#24 0x00002b1dab7af7c7 in ?? () from /lib64/ld-linux-x86-64.so.2
#25 0x00002b1db31c3fba in ?? () from /lib/libdl.so.2
#26 0x00002b1dab7abc66 in ?? () from /lib64/ld-linux-x86-64.so.2
#27 0x00002b1db31c452d in ?? () from /lib/libdl.so.2
#28 0x00002b1db31c3f32 in dlopen () from /lib/libdl.so.2
#29 0x00002b1daf164d52 in ?? () from /usr/kde/3.5/lib64/libkdecore.so.4
#30 0x00002b1daf16388d in ?? () from /usr/kde/3.5/lib64/libkdecore.so.4
#31 0x00002b1daf16488d in lt_dlopen () from /usr/kde/3.5/lib64/libkdecore.so.4
#32 0x00002b1daf0bf83e in KLibLoader::library ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#33 0x00002b1dabcc2498 in Kopete::PluginManager::loadPluginInternal ()
   from /usr/kde/3.5/lib64/libkopete.so.1
#34 0x00002b1dabcc2d0f in Kopete::PluginManager::slotLoadNextPlugin ()
   from /usr/kde/3.5/lib64/libkopete.so.1
#35 0x00002b1dabcc3e23 in Kopete::PluginManager::qt_invoke ()
   from /usr/kde/3.5/lib64/libkopete.so.1
#36 0x00002b1db02101fc in QObject::activate_signal ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#37 0x00002b1db0500e9c in QSignal::signal ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#38 0x00002b1db0228fc5 in QSignal::activate ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#39 0x00002b1db022f638 in QSingleShotTimer::event ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#40 0x00002b1db01b9135 in QApplication::internalNotify ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#41 0x00002b1db01b9d42 in QApplication::notify ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#42 0x00002b1daf01cdce in KApplication::notify ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#43 0x00002b1db01af642 in QEventLoop::activateTimers ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#44 0x00002b1db016f502 in QEventLoop::processEvents ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#45 0x00002b1db01cdbb2 in QEventLoop::enterLoop ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#46 0x00002b1db01cda62 in QEventLoop::exec ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#47 0x0000000000431b35 in ?? ()
#48 0x00002b1db3b79b74 in __libc_start_main () from /lib/libc.so.6
#49 0x0000000000431589 in ?? ()
#50 0x00007fffff309e08 in ?? ()
#51 0x0000000000000000 in ?? ()

Console output:

QDateTime::fromString: Parameter out of range
QDateTime::fromString: Parameter out of range
[note: there over a hundred lines of "QDateTime:: ... range", so I'm not copying them all]
QDateTime::fromString: Parameter out of range
QDateTime::fromString: Parameter out of range
QDateTime::fromString: Parameter out of range
kopete: tpp.c:63: __pthread_tpp_change_priority: Assertion `new_prio == -1 || (new_prio >= __sched_fifo_min_prio && new_prio <= __sched_fifo_max_prio)' failed.
KCrash: Application 'kopete' crashing...