Ошибки MCE

В общем, время от времени вылазят подобные штуки:

MCE: The hardware reports a non fatal, correctable incident occurred on CPU 0.
Bank 1: 9000000000000171

Вот мое emerge --info:

# emerge --info
Portage 2.1.6.11 (default/linux/x86/2008.0, gcc-4.3.2, glibc-2.8_p20080602-r1, 2.6.28-gentoo-r5 i686)
=================================================================
System uname: Linux-2.6.28-gentoo-r5-i686-AMD_Athlon-tm-_XP_2000+-with-glibc2.0
Timestamp of tree: Sat, 23 May 2009 03:00:02 +0000
app-shells/bash:     3.2_p39
dev-lang/python:     2.5.4-r2
dev-util/cmake:      2.6.2-r1
sys-apps/baselayout: 1.12.11.1
sys-apps/sandbox:    1.6-r2
sys-devel/autoconf:  2.63
sys-devel/automake:  1.8.5-r3, 1.9.6-r2, 1.10.2
sys-devel/binutils:  2.18-r3
sys-devel/gcc-config: 1.4.1
sys-devel/libtool:   1.5.26
virtual/os-headers:  2.6.27-r2
ACCEPT_KEYWORDS="x86"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -O3 -pipe"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /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="-march=athlon-xp -O3 -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="buildsyspkg distlocks fixpackages parallel-fetch protect-owned sandbox sfperms strict unmerge-orphans userfetch"
GENTOO_MIRRORS="ftp://krasfiles.ru/mirrors/gentoo/  ftp://allotter.yandex.net/gentoo-distfiles/"
LANG="ru_RU.UTF-8"
LC_ALL=""
LDFLAGS="-Wl,-O1"
LINGUAS="ru en"
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/overlay"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="7zip acl apache2 bash-completion bzip2 charconv cli cracklib crypt device-mapper dri flac fontconfig fortran gd gdbm iconv ipv6 isc isdnlog jpeg logrotate lvm2 midi mudflap ncurses nls nptl nptlonly openmp pam pcre png pppd python readline reflection samba session slang spl ssl svga sysfs tcpd tiff truetype unicode userlocales vhosts vim-syntax win32codecs x86 xml xorg xpm 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 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" APACHE2_MPMS="peruser" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="ru en" USERLAND="GNU" VIDEO_CARDS="fbdev glint i810 intel mach64 mga neomagic nv r128 radeon savage sis tdfx trident vesa vga via vmware voodoo"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, MAKEOPTS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

Кто знает, что это и как с этим бороться?