Version:           1.6.6 (using 3.5.9, Debian Package 4:3.5.9.dfsg.1-4 (lenny/sid))
Compiler:          Target: i486-linux-gnu
OS:                Linux (i686) release 2.6.23-1-686

I saved a KDE session with this command
$dcop ksmserver default saveCurrentSession
And there is a konsole window opened in current session.

When I reboot, previously saved konsole window crashes every time.
Then I have to restart a konsole window, which works OK. If I save session and reboot again, konsole crashes again, every time.

I saved the debug information, hope it is helpful.
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Using host libthread_db library "/lib/i686/cmov/libthread_db.so.1".
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[Thread debugging using libthread_db enabled]
[New Thread 0xb6858b50 (LWP 7325)]
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[KCrash handler]
#6  0xb6e899df in XSetICValues () from /usr/lib/libX11.so.6
#7  0xb5d91275 in QXIMInputContext::setXFontSet ()
   from /usr/lib/qt3/plugins/inputmethods/libqxim.so
#8  0xb5d9139d in QXIMInputContext::setMicroFocus ()
   from /usr/lib/qt3/plugins/inputmethods/libqxim.so
#9  0xb64ff3b8 in QMultiInputContext::setMicroFocus ()
   from /usr/lib/qt3/plugins/inputmethods/libqimsw-multi.so
#10 0xb71c49eb in QWidget::setMicroFocusHint () from /usr/lib/libqt-mt.so.3
#11 0xb6492299 in TEWidget::setCursorPos ()
   from /usr/lib/libkdeinit_konsole.so
#12 0xb64b57e0 in TEmulation::showBulk () from /usr/lib/libkdeinit_konsole.so
#13 0xb64b5917 in TEmulation::setConnect ()
   from /usr/lib/libkdeinit_konsole.so
#14 0xb64b5952 in TEmuVt102::setConnect () from /usr/lib/libkdeinit_konsole.so
#15 0xb648bf38 in TESession::setConnect () from /usr/lib/libkdeinit_konsole.so
#16 0xb64cd66b in Konsole::activateSession ()
   from /usr/lib/libkdeinit_konsole.so
#17 0xb64ce64b in Konsole::doneSession () from /usr/lib/libkdeinit_konsole.so
#18 0xb64d4cbd in Konsole::qt_invoke () from /usr/lib/libkdeinit_konsole.so
#19 0xb7262b10 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#20 0xb6496c61 in TESession::done () from /usr/lib/libkdeinit_konsole.so
#21 0xb64b720b in TESession::done () from /usr/lib/libkdeinit_konsole.so
#22 0xb64bf8b4 in TESession::qt_invoke () from /usr/lib/libkdeinit_konsole.so
#23 0xb7262b10 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#24 0xb726345d in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#25 0xb6491950 in TEPty::done () from /usr/lib/libkdeinit_konsole.so
#26 0xb6491b9e in TEPty::donePty () from /usr/lib/libkdeinit_konsole.so
#27 0xb64a1e28 in TEPty::qt_invoke () from /usr/lib/libkdeinit_konsole.so
#28 0xb7262b10 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#29 0xb7832e3e in KProcess::processExited () from /usr/lib/libkdecore.so.4
#30 0xb783305f in KProcess::processHasExited () from /usr/lib/libkdecore.so.4
#31 0xb782efae in KProcessController::slotDoHousekeeping ()
   from /usr/lib/libkdecore.so.4
#32 0xb782f0d2 in KProcessController::qt_invoke ()
   from /usr/lib/libkdecore.so.4
#33 0xb7262b10 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#34 0xb726345d in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#35 0xb75f340d in QSocketNotifier::activated () from /usr/lib/libqt-mt.so.3
#36 0xb7284cda in QSocketNotifier::event () from /usr/lib/libqt-mt.so.3
#37 0xb71f736a in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#38 0xb71f9193 in QApplication::notify () from /usr/lib/libqt-mt.so.3
#39 0xb7907622 in KApplication::notify () from /usr/lib/libkdecore.so.4
#40 0xb71886c9 in QApplication::sendEvent () from /usr/lib/libqt-mt.so.3
#41 0xb71e91e2 in QEventLoop::activateSocketNotifiers ()
   from /usr/lib/libqt-mt.so.3
#42 0xb719d17f in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#43 0xb72126e4 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#44 0xb72123e2 in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#45 0xb71f8f13 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#46 0xb64d933f in kdemain () from /usr/lib/libkdeinit_konsole.so
#47 0xb7f94454 in kdeinitmain () from /usr/lib/kde3/konsole.so
#48 0x0804ed50 in ?? ()
#49 0x00000003 in ?? ()
#50 0x08074ae0 in ?? ()
#51 0x00000001 in ?? ()
#52 0x00000000 in ?? ()