Compiled errors

[knACk]

From few day ago i got this errors when compiled certain packages
that libstdc++ no exist in /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.4/...
and sometimes /usr/lib/gcc-lib/i586-pc-linux-gnu/3.3.4/ when
the correct path is /usr/lib/gcc-lib/i686-pc-linux-gnu/3.4.3/

I change CHOST sometime ago from i586 to i686 and from compiled
from 3.3.4 to 3.4.3 but seems sometime when compiled something
reference to old binaries. i think i missed recompiled something but
what? or perhaps is other thing?
i switched with gcc-config the compiler

Excuse my english and thx