unfortunately, no unusual environment settings found, but there is a very important message that I haven't noticed. that is the libstdc++ root loads is libstdc++.so.5, however the user load the version libstdc++.so.6, so that's why they goes to /usr/lib/libstdc++-v3/ and /usr/lib/gcc/i686-pc-li8nux-gnu/4.3.6/ respectively.
still the question is how could this happen? no special environment variables, if the acroread has been compiled with version 5, it should be failed even for the root, just odd.
thanks,
daniel
