When I do emerge -UDp world, I see: [ebuild U ] media-libs/libid3tag-0.15.1b [0.15.0b] I upgrade the package using emerge -UD world After that, emerge -UDp shows me: [ebuild UD] media-libs/libid3tag-0.15.0b [0.15.1b] To be on the safe side, I do emerge -UD again. But, what will it be, upgrade of downgrade? Reproducible: Always Steps to Reproduce: 1. emerge -UDp world 2. emerge -UD world 3. emerge -UDp world 4. emerge -UD world Actual Results: [ebuild U ] media-libs/libid3tag-0.15.1b [0.15.0b] [ebuild UD] media-libs/libid3tag-0.15.0b [0.15.1b] Expected Results: I don't know, but just one of the two! Gentoo Base System version 1.4.3.13 Portage 2.0.50-r1 (default-x86-1.4, gcc-3.3.2, glibc-2.3.2-r9, 2.4.25) ================================================================= System uname: 2.4.25 i686 AMD Athlon(tm) XP 2600+ distcc 2.12.1 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled] ccache version 2.3 [enabled] Autoconf: sys-devel/autoconf-2.58-r1 Automake: sys-devel/automake-1.7.7 ACCEPT_KEYWORDS="x86" AUTOCLEAN="yes" CFLAGS="-O2 -march=athlon-xp -pipe" CHOST="i686-pc-linux-gnu" COMPILER="gcc3" CXXFLAGS="-O2 -march=athlon-xp -pipe" FEATURES="autoaddcvs buildpkg ccache sandbox" MAKEOPTS="-j2" USE="X apm arts avi berkdb bonobo cdr crypt cups directfb encode esd foomaticdb gdbm gif gnome gpm gtk gtk2 imlib java jpeg ldap libg++ libwww mad mikmod motif mozilla mpeg mysql ncurses oggvorbis opengl oss pam pdflib perl png python quicktime readline ruby sdl slang ssl svga tcpd truetype x86 xml2 xmms xv zlib"
Update, not upgrade. You're experiencing a problem due to specific deps. emerge --tree -vUDp world for both cases and submit a bug for those packages.