[CentOS] firefox 18

From: fred smith <fredex at fcshome.stoneham.ma.us>

> Has anyone managed to get FF 18.0 to work on Centos 5.8?
> I've been hacking at it, placing a stack of .so files (from Centos 6)
> into a private directory, then using LD_LIBRARY_PATH to point the system to 
> (in a shellscript that subsequently invokes ff 18) but so far I've not
> managed to find the right combination. I've moved over libstdc++, all
> or nearly all the .so files from glib2 and glibc packages. now I"m
> getting:
> 
> ./firefox: symbol lookup error: ./libstdc++.so.6: undefined symbol: 
> _ZNSt7num_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE, version 
> GLIBCXX_3.4

I tried to update to 18, and it did not complain about libstd++...
I think I only copied:
  libstdc++.so.6 -> libstdc++.so.6.0.10*
  libstdc++.so.6.0.10*
No other lib or script...
But 18 complained about: "Couldn't load XRE functions."
Went back to 17.0.1 in the mean time...

JD