with dropbox 1.2.48 I get: /opt/dropbox/libstdc++.so.6: version `GLIBCXX_3.4.11' not found (required by /usr/lib64/libproxy.so.1) Failed to load module: /usr/lib64/gio/modules/libgiolibproxy.so program starts anyway. simply solved it by "rm /opt/dropbox/libstdc++.so.6" so it will use "/usr/lib64/gcc/x86_64-pc-linux-gnu/4.5.3/libstdc++.so.6" instead. Reproducible: Always Portage 2.1.10.11 (default/linux/amd64/10.0, gcc-4.5.3, glibc-2.12.2-r0, 3.0.6-gentoo-ck1 x86_64) ================================================================= System uname: Linux-3.0.6-gentoo-ck1-x86_64-Intel-R-_Core-TM-2_CPU_6400_@_2.13GHz-with-gentoo-2.0.3 Timestamp of tree: Sat, 03 Dec 2011 18:45:01 +0000 ccache version 3.1.6 [enabled] app-shells/bash: 4.1_p9 dev-java/java-config: 2.1.11-r3 dev-lang/python: 2.7.2-r3, 3.1.4-r3 dev-util/ccache: 3.1.6 dev-util/cmake: 2.8.4-r1 dev-util/pkgconfig: 0.26 sys-apps/baselayout: 2.0.3 sys-apps/openrc: 0.9.4 sys-apps/sandbox: 2.5 sys-devel/autoconf: 2.13, 2.68 sys-devel/automake: 1.9.6-r3, 1.10.3, 1.11.1 sys-devel/binutils: 2.21.1-r1 sys-devel/gcc: 4.4.5, 4.5.3-r1 sys-devel/gcc-config: 1.4.1-r1 sys-devel/libtool: 2.4-r1 sys-devel/make: 3.82-r1 sys-kernel/linux-headers: 2.6.39 (virtual/os-headers) sys-libs/glibc: 2.12.2 Repositories: sunrise gentoo-zh maggu2810-overlay dev-zero gentoo hasufell-overlay ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/splash /etc/terminfo" CXXFLAGS="-march=native -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="assume-digests binpkg-logs ccache distlocks ebuild-locks fixlafiles fixpackages news parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch" FFLAGS="" GENTOO_MIRRORS="ftp://de-mirror.org/gentoo/ ftp://mirror.netcologne.de/gentoo/ ftp://gentoo.imj.fr/pub/gentoo/" LANG="de_DE.utf8" LC_ALL="" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="de en" MAKEOPTS="-j2" 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="/var/lib/layman/sunrise /var/lib/layman/gentoo-zh /var/lib/layman/maggu2810-overlay /var/lib/layman/dev-zero /usr/portage /usr/local/portage" SYNC="rsync://rsync1.de.gentoo.org/gentoo-portage" USE="X a52 aac acl acpi alsa amd64 apng bash-completion berkdb btrfs bzip2 cairo cdr cli consolekit cracklib crypt css cxx dbus dri dv dvd dvdr exif fat fbcondecor ffmpeg flac fontconfig fortran gdbm gif gpm gstreamer hddtemp iconv icq ipv6 jabber java jpeg jpeg2k lame libnotify lm_sensors matroska mmx modules mp3 mp4 mpeg mudflap multilib musepack nautilus ncurses nls nptl nptlonly nsplugin ntfs ogg opengl openmp oscar pam pcre pdf png policykit pppd python raw readline sdl session sound sse sse2 ssl ssse3 svg sysfs tcpd tiff truetype udev unicode usb v4l vcd vdpau vim-syntax vnc vorbis wavpack wmf x264 xorg xv xvid xvmc 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 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="kexi words flow plan stage tables krita karbon braindump" 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="de en" PHP_TARGETS="php5-3" QEMU_SOFTMMU_TARGETS="i386 ppc ppc64 x86_64" QEMU_USER_TARGETS="arm i386 x86_64" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="nvidia virtualbox" 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, INSTALL_MASK, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
libstdc++.so.6 dropped thanks.
