Cabal is not working now

[Ahn, Ki Yung]

kyagrd at kyagrd:~/cscs/EugeneSumSch/distr$ cabal --version
cabal-install version 0.6.0
using version 1.6.0.1 of the Cabal library
kyagrd at kyagrd:~$ cabal update
Downloading package list from server
'http://hackage.haskell.org/packages/archive'
kyagrd at kyagrd:~$ cabal upgrade
Resolving dependencies...
cabal: cannot configure HUnit-1.2.0.2. It requires base ==4.*
There is no available version of base that satisfies ==4.*


I am using the current stable release of ghc 6.8.3 on linux i386, which
as base version 3.x.x.  As you can see, I am using the most recent
version of cabal that I can get by doing "cabal upgrade cabal-install".

Thanks,

Ahn, Ki Yung