libstdc++.so.5 may conflict with libstdc++.so.6

Dear Rooters,
Recently i switched to FC4 from Red Hat 9.0. I was trying to recompile program which uses root libraries. I am getting the next warning:

g++ -g -O3 -Wall -fPIC -Wno-deprecated -pthread -I/usr/local/root/include -c ldfroot.cxx g++ -g -O3 -Wall -fPIC -Wno-deprecated -pthread -I/usr/local/root/include -c main.cxx
g++ -g -O3 ldfroot.o main.o -L/usr/local/root/lib -lCore -lCint -lHist -lGraf -lGraf3d -lGpad -lTree -lRint -lPostscript -lMatrix -lPhysics -pthread -lm -ldl -rdynamic -o ldfroot /usr/bin/ld: warning: libstdc++.so.5, needed by /usr/local/root/lib/libCore.so, may conflict with libstdc++. so.6 ldfroot DONE

When I am running program, i am getting the next errors:

• Break *** segmentation violation Generating stack trace... 0x073e27e9 in std::basic_ostream<char, std::char_traits<char>
  >::flush() + 0x19 from /usr/lib/libstdc++.so.
  6 0x073e28f5 in std::basic_ostream<char, std::char_traits<char>
  >::sentry::sentry(std::basic_ostream<char, st
  d::char_traits<char> >&) + 0x6b from /usr/lib/libstdc++.so.6 0x073e3552 in std::basic_ostream<char, std::char_traits<char>
  >::operator<<(long) + 0x42 from /usr/lib/libs
  tdc++.so.6 0x0804a26f in itos(int) + 0x3b from ./ldfroot 0x0804ab12 in LdfToRoot(char const*, char const*, int*, std::basic_string<char, std::char_traits<char>, std ::allocator<char> >*, int) + 0x5fa from ./ldfroot 0x0804c1f4 in main + 0x518 from ./ldfroot 0x06ea7d5f in __libc_start_main + 0xdf from /lib/libc.so.6 0x0804a07d in __gxx_personality_v0 + 0x81 from ./ldfroot Aborted

What you would suggest to do ?

Thank you,
Boris.

-- 
Boris Skorodumov, PhD Student 
Physics Department      
University of Notre Dame
In 46556, USA
http://www.nd.edu/~bskorodo