This has a multilib problem. libstdc++ has a few of the same files
in
both the x86-64 and i686 packages, making it impossible to have both
installed (which should be possible, and is in F13).
The files are a few Python bits
in /usr/share/gcc-4.5.0/python/libstdcxx/v6/ .
Would it work if they were in libstdc++-devel instead?
In F13 that seems to be ok for /usr/include/c++/4.4.4/ files.
Thanks,
Roland