Циклическая зависимость?

# emerge --info
Portage 2.1.6.13 (default/linux/x86/10.0/server, gcc-4.3.2, glibc-2.8_p20080602-r1, 2.6.29-gentoo-r5 i686)
=================================================================
System uname:

Timestamp of tree: Wed, 25 May 2011 18:15:01 +0000
app-shells/bash: 3.2_p39
dev-lang/python: 2.5.4-r2
sys-apps/baselayout: 1.12.11.1
sys-apps/sandbox: 1.6-r2
sys-devel/autoconf: 2.63
sys-devel/automake: 1.7.9-r1, 1.10.2
sys-devel/binutils: 2.18-r3
sys-devel/gcc: 4.3.2-r3
sys-devel/gcc-config: 1.4.1
sys-devel/libtool: 1.5.26
sys-devel/make: 3.81
sys-kernel/linux-headers: 2.6.27-r2
sys-libs/glibc: 2.8_p20080602-r1
virtual/os-headers: 2.6.27-r2
ACCEPT_KEYWORDS="x86"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=i686 -pipe"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/gconf /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/udev/rules.d"
CXXFLAGS="-O2 -march=i686 -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="distlocks fixpackages parallel-fetch protect-owned sandbox sfperms strict unmerge-orphans userfetch"
GENTOO_MIRRORS="http://trumpetti.atm.tut.fi/gentoo/ http://gentoo.mneisen.org/ http://files.gentoo.org "
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
LINGUAS="ru en"
MAKEOPTS="-j4"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --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="acl apache2 berkdb bzip2 cli cracklib crypt ctype cups cxx dri fortran gdbm gpm iconv ipv6 ldap modules mudflap mysql mysqli ncurses nls nptl nptlonly openmp pam pcre pppd readline session snmp ssl sysfs tcpd truetype unicode x86 xattr xml xorg zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1 emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="braindump flow karbon kexi kpresenter krita tables words" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="ru en" PHP_TARGETS="php5-3" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="fbdev glint intel mach64 mga neomagic nouveau nv r128 radeon savage sis tdfx trident vesa via vmware voodoo" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, LC_ALL, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

и чем это поможет?

Кстати, раз уж попалось на глаза, а вы знаете, как переводится "beautiful good!" в вашей подписи?

Судя по всему удалось победить.
Собрал на соседнем хосту свежую систему с --buildpkg
(точнее заставил пересобрать emerge --update --newuse --deep --buildpkg --emptytree system world)

Потом на этом старом хосте размаскировал perl в
/usr/portage/package.mask

Обновил из бинарных пакетов (с "--usepkg --nodeps") пакты portage, perl, gcc

Сейчас запустил emerge --update --newuse --deep world

Пока процесс идет, блокировок не вылезло.