Please, add the amd64 keyword :-)
Thanks
My emerge --info:
Portage 2.1.1-r2 (default-linux/amd64/2006.1, gcc-4.1.1, glibc-2.4-r4,
2.6.18-gentoo-r1 x86_64)
=================================================================
System uname: 2.6.18-gentoo-r1 x86_64 AMD Athlon(tm) 64 Processor 3200+
Gentoo Base System version 1.12.6
Last Sync: Sat, 18 Nov 2006 16:50:01 +0000
ccache version 2.3 [enabled]
app-admin/eselect-compiler: [Not Present]
dev-java/java-config: 1.3.7, 2.0.30
dev-lang/python: 2.4.3-r4
dev-python/pycrypto: 2.0.1-r5
dev-util/ccache: 2.3
dev-util/confcache: [Not Present]
sys-apps/sandbox: 1.2.17
sys-devel/autoconf: 2.13, 2.60
sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2
sys-devel/binutils: 2.16.1-r3
sys-devel/gcc-config: 1.3.13-r4
sys-devel/libtool: 1.5.22
virtual/os-headers: 2.6.11-r2
ACCEPT_KEYWORDS="amd64"
AUTOCLEAN="yes"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=k8 -O2 -pipe -msse3"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config
/usr/kde/3.5/shutdown /usr/share/X11/xkb /usr/share/config"
CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/gconf
/etc/java-config/vms/ /etc/revdep-rebuild /etc/splash /etc/terminfo
/etc/texmf/web2c"
CXXFLAGS="-march=k8 -O2 -pipe -msse3"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig ccache distlocks metadata-transfer parallel-fetch sandbox
sfperms strict"
GENTOO_MIRRORS="http://ftp.club-internet.fr/pub/mirrors/gentoo
http://ftp.heanet.ie/pub/gentoo/
http://ftp.belnet.be/mirror/rsync.gentoo.org/gentoo/
http://gentoo.intergenia.de/ http://ftp.rhnet.is/pub/gentoo/"
LC_ALL="es_ES.UTF-8"
LINGUAS="es en_US"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress
--force --whole-file --delete --delete-after --stats --timeout=180
--exclude='/distfiles' --exclude='/local' --exclude='/packages'"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage"
SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage"
USE="X a52 aac aalib acpi alsa amd64 apache2 arts asf audiofile bash-completion
beagle bindist bitmap-fonts bonobo bzip2 bzlib cairo caps cdb cdda cddb
cdparanoia cdr cli cracklib cross crypt cscope css cups curl curlwrappers dbus
dga dio divx4linux dlloader dri dts dvd dvdr dvdread eds elibc_glibc encode
erandom escreen esd evo exif fam fbcon flac foomaticdb fortran ftp galago gb
gcj ggi gif gimp gimpprint glitz glut glx gnome gnome-print gphoto2 gpm
gstreamer gtk gtk2 gtkhtml hal iconv idn imagemagick imlib
input_devices_keyboard input_devices_mouse isdnlog ithreads jabber jack java
joystick jpeg kde kdeenablefinal kdehiddenvisibility kernel_linux latex lcms
libg++ libnotify linguas_en_US linguas_es lirc logrotate mad madwifi mcal
mikmod mime mng mono motif mp3 mpeg mpi mplayer musepack mysql nas nautilus
ncurses nethack network nls nocardbus nptl nptlonly nvidia ogg oggvorbis openal
opengl oss pam pcre pdf perl pic plotutils png posix ppds pppd python qt3 qt4
quicktime readline reflection rtc ruby scanner sdl seamonkey session slang slp
sockets spell spl ssl svg sysvipc tcltk tcpd tetex theora threads tiff timidity
tk totem trayicon truetype truetype-fonts type1-fonts udev unicode usb
userland_GNU v4l v4l2 vcd video_cards_fbdev video_cards_nv video_cards_nvidia
video_cards_vesa video_cards_vga videos vim vorbis wma wmf xcomposite xine xml
xml2 xorg xpm xv xvid zlib"
Unset: CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LDFLAGS,
PORTAGE_RSYNC_EXTRA_OPTS
