AFAIK, same bug was on Kubuntu, but it was a workaround for it, package firefox-3.0-gnome-support (source: http://ubuntuforums.org/showthread.php?t=869661). Reproducible: Always Steps to Reproduce: 1.Start Firefox 2.Open Preferences - Applications 3. Actual Results: Empty list Expected Results: List of mime types Portage 2.1.4.4 (default-linux/x86/2007.0, gcc-4.1.2, glibc-2.6.1-r0, 2.6.24-gentoo-r8 i686) ================================================================= System uname: 2.6.24-gentoo-r8 i686 AMD Athlon(tm) XP 2600+ Timestamp of tree: Fri, 08 Aug 2008 09:45:03 +0000 app-shells/bash: 3.2_p33 dev-java/java-config: 1.3.7, 2.1.6 dev-lang/python: 2.4.4-r13, 2.5.2-r6 dev-python/pycrypto: 2.0.1-r6 sys-apps/baselayout: 1.12.11.1 sys-apps/sandbox: 1.2.18.1-r2 sys-devel/autoconf: 2.13, 2.61-r2 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.1 sys-devel/binutils: 2.18-r3 sys-devel/gcc-config: 1.4.0-r4 sys-devel/libtool: 1.5.26 virtual/os-headers: 2.6.23-r3 ACCEPT_KEYWORDS="x86" CBUILD="i686-pc-linux-gnu" CFLAGS=" -O2 -march=athlon-xp -pipe" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/kde/4.0/env /usr/kde/4.0/share/config /usr/kde/4.0/shutdown /usr/kde/4.1/env /usr/kde/4.1/share/config /usr/kde/4.1/shutdown /usr/kde/svn/env /usr/kde/svn/share/config /usr/kde/svn/shutdown /usr/share/config /var/lib/hsqldb" CONFIG_PROTECT_MASK="/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/splash /etc/terminfo /etc/texmf/web2c /etc/udev/rules.d" CXXFLAGS=" -O2 -march=athlon-xp -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="distlocks metadata-transfer sandbox sfperms strict unmerge-orphans userfetch" GENTOO_MIRRORS="ftp://ftp.corbina.net/pub/Linux/gentoo/" LANG="ru_RU.UTF-8" LINGUAS="ru en en_US en_GB" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" 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/portage/local/layman/latest-released /usr/portage/local/layman/kdesvn-portage /usr/portage/local/layman/sunrise /usr/local/portage" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="3dnow 3dnowext X a52 aac aalib accessibility acl acpi aften allegro alsa amrnb apache2 apm arts audacious audiofile bash-completion berkdb bluetooth branding bzip2 cairo captury cjk cli cpudetection crypt css cups cxx dbus devil dri dssi dts dv dvd dvdarchive dvdr dvdread encode examples expat fame fbsplash ffmpeg firefox flac flash ftp gd gdbm gif gimp gphoto2 gpm gstreamer gtk guile gvim hal hddtemp htmlhandbook iconv icq id3tag ieee1394 imlib ipv6 irda irmc isdnlog jabber jack java javascript jingle jpeg kde kmid lame lcd lcms ldap libnotify libsamplerate lirc lm_sensors logitech-mouse lua lyrics mad midi mikmod mjpeg mmx mmxext mozilla mp3 mp3rtp mpd mpeg mplayer mudflap musepack music mysql ncurses netbeans network networkmanager nextaw nls nptlonly nsplugin ogg openal openexr opengl openmp pascal pch pcre pda pdf perl php plasma plugins png ppds pppd python qt3 qt3support qt4 quicktime rar rdesktop readline reflection rss samba sasl scanner sdl session spell spl sql sse ssl startup-notification svga taglib tcpd theora tiff timidity tk transcode trayicon truetype twolame unicode usb userlocales v4l v4l2 vamp vcd vim vim-syntax vorbis win32codecs x264 x86 xcb xcomposite xhtml xml xorg xpm xprint xscreensaver xulrunner xv xvid zip zlib" ALSA_CARDS="ice1712 ice1724 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" CAMERAS="*" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="ru en en_US en_GB" USERLAND="GNU" VIDEO_CARDS="apm ark chips cirrus cyrix dummy fbdev glint i128 i740 i810 imstt mach64 mga neomagic nsc nv r128 radeon rendition s3 s3virge savage siliconmotion sis sisusb tdfx tga trident tseng v4l vesa vga via vmware voodoo" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, LDFLAGS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
On ff-3.0 here too. With xfce4
*** This bug has been marked as a duplicate of bug 228665 ***
