GHCi 6.0.1 on Mac OS X + emacs hangs

Hi,

Using GHCi 6.0.1 on Mac OS X with emacs (using the emacs mode files
from the haskell.org website) fails. Emacs eventually hangs,
but the first symptom is a failure to return the GHCi prompt.

Hugs still works with emacs. I also checked the comint-prompt-regexp,
usually the cause of these problems. It is OK and fiddling with it to make
it more obviously OK for a test case didn't help.

The ghci buffer displays only:

___         ___ _
/ _ \ /\  /\/ __(_)
/ /_\// /_/ / /  | |      GHC Interactive, version 6.0.1, for Haskell 98.
/ /_\\/ __  / /___| |      http://www.haskell.org/ghc/
\____/\/ /_/\____/|_|      Type :? for help.

Loading package base ... linking ... done.


Attempting to load anything from the buffer with source code
wedges emacs solidly.

Has anyone else noticed this? Are non-OS X platforms working?

Thanks.

Best Wishes,

Greg Wright