mmap() returned memory outside 2Gb - GHC on ubuntu hardy amd64

I cannot get GHC to work on a fresh ubuntu hardy machine: On installing using the package manager I get an error when running ghci: "R_X86_64_32S relocation out of range:" - similar to http://hackage.haskell.org/trac/ghc/ticket/2013, but that bug is FreeBSD specific. I decided to install the binary distribution: after which running ghci fails with error: GHCi, version 6.10.1: http://www.haskell.org/ghc/ :? for help ghc: internal error: mmap() returned memory outside 2Gb (GHC version 6.10.1 for x86_64_unknown_linux) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug Aborted I Added issues #2779 to Trac for the second case. Are there any possible work arounds for these problems? Rahul