UPDATE

ベースシステムを2006.0に変更したからかバージョンアップサボってたphpが早くアップしてって感じです。
それとmedia-video/mpeg4ipとmedia-libs/libmp4v2がぶつかってます。これはmedia-libs/libmp4v2をmaskが妥当なのか？？？？？？いやいやmedia-video/mpeg4ipを一旦削除して再インストールすれば大丈夫みたい。

Calculating world dependencies
!!! Packages for the following atoms are either all
!!! masked or don't exist:
dev-php/php dev-php/mod_php
...done!
[blocks B ] ＜media-video/mpeg4ip-1.4.1 (is blocking media-libs/libmp4v2-1.4.1)
[ebuild N ] media-libs/libmp4v2-1.4.1 4,678 kB
[ebuild U ] media-video/mpeg4ip-1.4.1 [1.1] -a52 +alsa -arts +esd +ffmpeg -id3 +ipv6 -lame +mmx -mp4live -mpeg2 +nas -player -v4l2 +xvid 0 kB
[ebuild U ] sys-libs/lib-compat-1.4.1 [1.4] +sdl 3,093 kB
[ebuild U ] app-text/enchant-1.2.5 [1.1.6] 519 kB
[ebuild N ] dev-libs/libksba-0.9.13 468 kB
[ebuild N ] dev-libs/pth-1.4.0 434 kB
[ebuild N ] dev-libs/libassuan-0.6.10 251 kB
[ebuild NS ] app-crypt/gnupg-1.9.20-r3 +X -caps -gpg2-experimental +ldap +nls (-selinux) -smartcard 1,767 kB
[ebuild U ] app-text/poppler-0.5.1-r1 [0.5.0-r5] +jpeg 972 kB
[ebuild U ] app-text/xpdf-3.01-r8 [3.01-r7] -nodrm 0 kB
[ebuild U ] x11-misc/xscreensaver-4.24 [4.23-r1] +gnome -insecure-savers +jpeg +kerberos +krb4 +new-login +nls -offensive +opengl +pam +xinerama 4,821 kB
[ebuild U ] app-text/gnome-spell-1.0.7-r1 [1.0.6] -debug -static 323 kB
[ebuild N ] virtual/perl-Time-Local-1.11 0 kB
[ebuild NS ] net-www/awstats-6.6 +vhosts 1,034 kB
[ebuild U ] net-misc/dhcpcd-2.0.5 [2.0.3] -build -debug -static 121 kB
[ebuild U ] net-www/mod_auth_mysql-3.0.0 [2.0.0_pre20030510] +apache2 0 kB