Inter-module links with Haddock broken?

[Sven Panne]

Currently I am unable to make inter-module links (of the form 'Foo.Bar.baz') 
work with the Haddock shipped with GHC 6.10.2. The library documentation on 
haskell.org has the same problem, see e.g. the last paragraphs of

   http://www.haskell.org/ghc/docs/latest/html/libraries/base/Control-
Exception-Base.html#v:catch

This doesn't work for a few releases now, so I guess this is a known bug, but 
I can't find a ticket for it. Are there workarounds for this? A new syntax?

Cheers,
   S.