GHCi support on x86_64

I just installed the 64bit version of ghc on an athlon
64.  ghc does work and produces correct 64bit code, but
ghci fails to start.

Here is the complete output:

[phil@athlon64 ~]$ ghci
   ___         ___ _
  / _ \ /\  /\/ __(_)
 / /_\// /_/ / /  | |      GHC Interactive, version
6.2.2, for Haskell 98.
/ /_\\/ __  / /___| |      http://www.haskell.org/ghc/
\____/\/ /_/\____/|_|      Type :? for help.

Loading package base ... /usr/lib64/ghc-6.2.2/HSbase.o:
unknown architecture
ghc-6.2.2: panic! (the `impossible' happened, GHC
version 6.2.2):
        loadObj: failed

Please report it as a compiler bug to
glasgow-haskell-bugs@haskell.org,
or http://sourceforge.net/projects/ghc/.

I'm using Fedora Core 3 and installed ghc using yum.

If you have any questions, contact me:
philipp.classen[AT]gmx.net

Thanks,
Philipp