before the update to 3.6.8 firefox crashed when i open a dialog in it after the update it doesn't start at all tried to delete the .mozilla and nothing better tried to rebuild world and nothing better Reproducible: Always Steps to Reproduce: 1. launch mozilla 2. it doesn't start (crashes when open the default browser dialog) 3. emerge --info Portage 2.1.8.3 (default/linux/x86/10.0/desktop/gnome, gcc-4.4.3, glibc-2.11.2-r0, 2.6.34-gentoo-r1 i686) ================================================================= System uname: Linux-2.6.34-gentoo-r1-i686-Intel-R-_Core-TM-_i3_CPU_540_@_3.07GHz-with-gentoo-1.12.13 Timestamp of tree: Wed, 28 Jul 2010 02:45:01 +0000 ccache version 2.4 [disabled] app-shells/bash: 4.0_p37 dev-java/java-config: 2.1.11 dev-lang/python: 2.6.5-r2, 3.1.2-r3 dev-util/ccache: 2.4-r7 dev-util/cmake: 2.6.4-r3 sys-apps/baselayout: 1.12.13 sys-apps/sandbox: 1.6-r2 sys-devel/autoconf: 2.13, 2.65 sys-devel/automake: 1.9.6-r3, 1.10.3, 1.11.1 sys-devel/binutils: 2.20.1-r1 sys-devel/gcc: 4.4.3-r2 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 2.2.6b virtual/os-headers: 2.6.30-r1 ACCEPT_KEYWORDS="x86" ACCEPT_LICENSE="* -@EULA dlj-1.1 skype-eula PUEL AdobeFlash-10.1" CBUILD="i686-pc-linux-gnu" CFLAGS="-O2 -pipe -march=native -mmmx -msse -msse2 -mssse3 -msse4.1 -msse4.2 -mpopcnt -mcx16 -msahf -mfpmath=sse" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/X11/xkb" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /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/splash /etc/terminfo" CXXFLAGS="-O2 -pipe -march=native -mmmx -msse -msse2 -mssse3 -msse4.1 -msse4.2 -mpopcnt -mcx16 -msahf -mfpmath=sse" DISTDIR="/usr/portage/distfiles" FEATURES="assume-digests distlocks fixpackages news parallel-fetch protect-owned sandbox sfperms strict unmerge-logs unmerge-orphans userfetch" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="fr_FR.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="fr en" MAKEOPTS="-j5" 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" SYNC="rsync://rsync.fr.gentoo.org/gentoo-portage" USE="X a52 aac acl acpi alsa avahi bash-completion berkdb bluetooth branding bzip2 cairo cdr cli consolekit cracklib crypt cups cxx dbus dri dts dvd dvdr eds emboss encode esd evo exif fam ffmpeg firefox flac fortran gdbm gdu gif gnome gnome-keyring gpm gstreamer gtk hal iconv jpeg lcms libnotify mad mikmod mmx mng modules mp3 mp4 mpeg mudflap nautilus ncurses nls nptl nptlonly nsplugin ogg opengl openmp pam pango pcre pdf perl png policykit ppds pppd python qt3support readline reflection sdl session spell spl sse sse2 sse4 ssl ssse3 startup-notification svg sysfs tcpd tiff truetype unicode usb virtualbox vorbis x264 x86 xcb xml xorg xulrunner xv xvid 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" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="fr en" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="nv nvidia" 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, LC_ALL, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY
Do you get any errors if you run firefox from terminal? You could try to get a stack trace of the crash too.
CFLAGS="-O2 -pipe -march=native -mmmx -msse -msse2 -mssse3 -msse4.1 -msse4.2 -mpopcnt -mcx16 -msahf -mfpmath=sse" You need to tone down your cflags, these are way to aggressive for some packages such as zlib which will result in failure in firefox. Once you have toned down the cflags and rebuild world feel free to reopen if the problem still exists.
