These 3 has depends on emul-linux-x86-compat (libstdc++.so.5 from GCC 3.3) app-office/mozilla-sunbird-bin-0.9:amd64 mail-client/mozilla-thunderbird-bin-3.0:amd64 www-client/seamonkey-bin-2.0_alpha3:amd64 It's most likely wrong, unless mozilla is still using gcc-3.3 to build the binpkgs.
Here's a lazy way to check: # qlist <package> | xargs objdump -p | grep NEEDED | grep libstdc ;-)
Fixed firefox-bin, mozilla-thunderbird-bin and seamonkey-bin (only latest). sunbird-bin really needs it, so left that untouched. please don't introduce these deps from e.g. your overlay back to tree again, thanks!
*** Bug 278774 has been marked as a duplicate of this bug. ***