can't login using kde logon screen anymore

[hanneshorn]

Group,

some recent update(s) have screwed up my ability to login using the kde logon screen.
when I enter my username, the display briefly turns black and then comes back with the original login screen.

what log file should I be looking for that might have clues?

thx.
H

this is was 'emerge info' tells me about my system:

Portage 2.0.51.19 (default-linux/amd64/2005.0, gcc-3.4.4, glibc-2.3.4.20041102-r1, 2.6.11-gentoo-r7 x86_64)
=================================================================
System uname: 2.6.11-gentoo-r7 x86_64 AMD Athlon(tm) 64 Processor 3200+
Gentoo Base System version 1.6.12
Python: dev-lang/python-2.3.5 [2.3.5 (#1, Jun 3 2005, 01:36:51)]
dev-lang/python: 2.3.5
sys-apps/sandbox: [Not Present]
sys-devel/autoconf: 2.13, 2.59-r6
sys-devel/automake: 1.9.5, 1.8.5-r3, 1.5, 1.7.9-r1, 1.6.3, 1.4_p6
sys-devel/binutils: 2.15.92.0.2-r10
sys-devel/libtool: 1.5.2-r5, 1.5.16
virtual/os-headers: 2.6.8.1-r4
ACCEPT_KEYWORDS="amd64"
AUTOCLEAN="yes"
CFLAGS="-O2 -pipe -march=k8 -fomit-frame-pointer"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.3/env /usr/kde/3.3/share/config /usr/kde/3.3/shutdown /usr/kde/3/share/config /usr/lib/X11/xkb /usr/lib/mozilla/defaults/pref /usr/share/config /var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d"
CXXFLAGS="-O2 -pipe -march=k8 -fomit-frame-pointer"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoaddcvs autoconfig ccache distlocks sandbox sfperms strict"
GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/Linux/distributions/gentoo"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="amd64 X acpi arts berkdb bitmap-fonts crypt db2 eds esd f77 fam font-server fortran gif gnome gpm gstreamer gtk gtk2 hal howl imlib ipv6 jp2 jpeg kde lzw lzw-tiff mad motif mozilla mp3 ncurses nls opengl oss pam perl png python qt readline samba ssl symlink tcltk tcpd tiff truetype truetype-fonts type1-fonts usb userlocales xml2 xpm xrandr xv zlib userland_GNU kernel_linux elibc_glibc"
Unset: ASFLAGS, CBUILD, CTARGET, LANG, LC_ALL, LDFLAGS, LINGUAS, PORTDIR_OVERLAY

[tukachinchila]

Try looking in your log files in /var/log for any signs of failed logins, or other errors.