Bugzilla Bug 141776

after updating to portage-2.1.1_pre3-r5 any package with new use flags
is asked to reemerge if I do an "emerge -auvDN world" even if I didn't touched
that flag (is on default value).

Is this the correct behaviour? (more than 100 packages to re-emerge, X and kde 
included....)

my emerge --info:
Portage 2.1.1_pre3-r5 (default-linux/x86/2006.0, gcc-4.1.1/vanilla,
glibc-2.4-r3, 2.6.17-gentoo-r4 i686)
=================================================================
System uname: 2.6.17-gentoo-r4 i686 AMD Sempron(tm) Processor 3100+
Gentoo Base System version 1.12.1
app-admin/eselect-compiler: 2.0.0_rc2-r1
dev-lang/python:     2.4.3-r1
dev-python/pycrypto: 2.0.1-r5
dev-util/ccache:     [Not Present]
dev-util/confcache:  [Not Present]
sys-apps/sandbox:    1.2.18.1
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:  2.17
sys-devel/gcc-config: 2.0.0_rc1
sys-devel/libtool:   1.5.22
virtual/os-headers:  2.6.11-r5
ACCEPT_KEYWORDS="x86 ~x86"
AUTOCLEAN="yes"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=athlon-xp -pipe -fomit-frame-pointer"
CHOST="i686-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/eselect/compiler
/etc/gconf /etc/java-config/vms/ /etc/revdep-rebuild /etc/splash /etc/terminfo"
CXXFLAGS="-O2 -march=athlon-xp -pipe -fomit-frame-pointer"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoaddcvs autoconfig ccache cvs distlocks metadata-transfer sandbox
sfperms strict"
GENTOO_MIRRORS="http://mirror.switch.ch/ftp/mirror/gentoo/
ftp://ftp.solnet.ch/mirror/Gentoo/ http://ftp.heanet.ie/pub/gentoo/"
LANG="it_IT@euro"
LINGUAS="it"
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.gentoo.org/gentoo-portage"
USE="x86 3dnow 3dnowex 3dnowext X aalib acl acpi acpi4linux alsa apache2 apm
audiofile avi berkdb bitmap-fonts bzip2 cli crypt cups curl divx4linux dlloader
dri dts dvb dvd dvdr dvdread eds emboss encode esd exif expat ffmpeg flac
foomaticdb fortran gdbm gif gimp glut gnome gphoto2 gpm gstreamer gtk gtk2
guile hal idn imagemagick imlib isdnlog java joystick jpeg kde lcms libg++
libwww lirc live lm_sensors mad matroska mikmod mmx mmx2 mmxext mng motif mp3
mpeg ncurses nls nptl nptlonly nsplugin nvidia offensive ogg ogre openexr
opengl oss pam pcre pdflib perl png pppd python qt qt3 qt4 quicktime readline
real reflection scanner sdl session spell spl sse sse-filters sse2 ssl svga
tcltk tcpd tiff truetype truetype-fonts type1-fonts udev unicode usb v4l v4l2
vorbis win32codecs wxgtk1 xcomposite xine xml2 xmms xorg xscreensaver xv xvid
xvmc zlib zvbi elibc_glibc input_devices_mouse input_devices_keyboard
input_devices_wacom kernel_linux linguas_it lirc_devices_devinput userland_GNU
video_cards_nvidia video_cards_nv video_cards_vesa video_cards_vga"
Unset:  CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, LDFLAGS,
PORTAGE_RSYNC_EXTRA_OPTS

No, not a bug. :)

*** This bug has been marked as a duplicate of 116955 ***