nspluginscan is part of the kdebase-nsplugins rpm (info below)
rpm -qlif /usr/bin/nspluginscan:
Name : kdebase-nsplugins Relocations: (not relocateable)
Version : 3.0.5a Vendor: MandrakeSoft
Release : 1.1mdk Build Date: Wed 08 Jan 2003 05:13:48
AM CST
Install date: Mon 20 Jan 2003 04:52:33 AM CST Build Host: tox.mandrakesoft.
com
Group : Graphical desktop/KDE Source RPM: kdebase-3.0.5a-1.1mdk.sr
c.rpm
Size : 269221 License: GPL
Packager : Mandrake Linux KDE Team <kde@mandrakesoft.com>
URL :
http://www.kde.org/
Summary : Netscape Plugins for kdebase
Description :
This package contains the Netscape plugins for konqueror files.
/usr/bin/nspluginscan
/usr/bin/nspluginviewer
/usr/lib/libnsplugin.la
/usr/lib/libnsplugin.so
/usr/lib/libnsplugin.so.1
/usr/lib/libnsplugin.so.1.0.1
/usr/lib/menu/kdebase-nsplugin
/usr/share/applnk/Settings/WebBrowsing
/usr/share/applnk/Settings/WebBrowsing/nsplugin.desktop
did you manually delete some kde files or something?
still shouldnt prevent it from logging in. Are you trying to login on a graphical login manager?
could you be more specific about exactly whats happeing and excatly what the error message is?