［求助］普通用户运行firefox, gimp, stardict等程序出现Segmentation fault

DonkeyTail

前两天升级系统后，突然发现用普通用户运行firefox, gimp, stardict等程序出现Segmentation fault。
但是root却没问题。
在网上搜了2天，无果，希望大家帮忙。
谢谢！

下面是我的make.conf:
CFLAGS="-march=nocona -O3 -pipe"
CXXFLAGS="${CFLAGS}"
CHOST="x86_64-pc-linux-gnu"
MAKEOPTS="-j3"
FEATURES="ccache parallel-fetch"
CCACHE_SIZE="10G" INPUT_DEVICE="keyboard mouse synaptics" VIDEO_CARDS="nvidia"
USE="-gnome -kde -qt3 -qt4 X dbus hal acpi bash-completion"
ACCEPT_KEYWORDS="~amd64"
source /usr/local/portage/layman/make.conf


emerge --info
Portage 2.1.6.13 (default/linux/amd64/2008.0, gcc-4.3.3, glibc-2.10.1-r0, 2.6.30.2 x86_64)
=================================================================
System uname: Linux-2.6.30.2-x86_64-Intel-R-_Core-TM-2_Duo_CPU_T9400_@_2.53GHz-with-gentoo-2.0.1
Timestamp of tree: Fri, 24 Jul 2009 18:55:01 +0000
ccache version 2.4 [enabled]
app-shells/bash:     4.0_p24
dev-lang/python:     2.5.4-r3, 2.6.2-r1
dev-util/ccache:     2.4-r8
sys-apps/baselayout: 2.0.1
sys-apps/openrc:     0.4.3-r3
sys-apps/sandbox:    2.0
sys-devel/autoconf:  2.13, 2.63-r1
sys-devel/automake:  1.6.3, 1.10.2, 1.11
sys-devel/binutils:  2.19.1-r1
sys-devel/gcc-config: 1.4.1
sys-devel/libtool:   2.2.6a
virtual/os-headers:  2.6.30
ACCEPT_KEYWORDS="amd64 ~amd64"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=nocona -O3 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c /etc/udev/rules.d"
CXXFLAGS="-march=nocona -O3 -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="ccache distlocks fixpackages parallel-fetch protect-owned sandbox sfperms strict unmerge-orphans userfetch"
GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo"
LANG="en_US.UTF-8"
LDFLAGS="-Wl,-O1"
MAKEOPTS="-j3"
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/layman/science"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="X acl acpi amd64 bash-completion berkdb bzip2 cli cracklib crypt cups dbus dri fortran gdbm gpm hal iconv ipv6 isdnlog midi mmx mudflap multilib ncurses nls nptl nptlonly openmp pam pcre perl pppd python readline reflection session spl sse sse2 ssl sysfs tcpd unicode xorg zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci 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" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" USERLAND="GNU" VIDEO_CARDS="nvidia"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

coderoar

firefox可能是输入法问题，很多输入法都会导致Segment fault，但是这个已经在新版本解决了。

fender010

lz用-O3的优化级别，估计是优化过渡。