Version:           1.3.90 (using KDE 3.2.90 (3.3 alpha1, CVS >= 20040522),  (testing/unstable))
Compiler:          gcc version 3.3.3 (Debian 20040422)
OS:                Linux (i686) release 2.6.3

How to Reproduce:
Start a new konsole, create a new session, change window size, change session.

kdebase and kdelibs 3.2.90 build from sources (without kde already installed) with:

$./configure --disable-rpath --prefix=/usr --sysconfdir=/etc --includedir=/usr/include/kde --infodir=/usr/share/info --mandir=/usr/share/man --with-qt-dir=/usr/share/qt3 --enable-final \
--with-distribution="Debian Package 4:3.2.90-1 (testing/unstable)" \
--enable-dnotify --enable-mitshm --with-alsa --with-ipv6-lookup=auto \
--enable-debug
$make
$make install

You can get a full backtrace from:
http://webs.ono.com/uucp/konsole.crash

a second (shorter) from:
http://webs.ono.com/uucp/konsole2.crash

and a stderr dump (konsole 2> konsole.log) crashing fast from:
http://webs.ono.com/uucp/konsole.log