I've made a speculative fix. If you're able to test it, that would be very helpful:
http://hackage.haskell.org/trac/ghc/ticket/2063
Cheers, Simon
I had no luck installing the binary snapshot (libedit problems, which I worked around by creating a link to the version I had) after which I started get libc version problems so I gave up on that built the HEAD snapshot from source. running ghci in-place now gives: GHCi, version 6.11.20081117: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. ghc: internal error: loadObj: failed to mmap() memory below 2Gb; asked for 57344 bytes at 0x0x4009fa00, got 0x0x7f3a9b2b8000. Try specifying an address with +RTS -xm<addr> -RTS (GHC version 6.11.20081117 for x86_64_unknown_linux) I am not really sure what I <addr> for -xm should be. Rahul