[xmonad] Issue 226 in xmonad: XMonad.Prompt lockups with ghc 6.10

[wirtwolff]

Comment #12 on issue 226 by SpencerJanssen: XMonad.Prompt lockups with 
ghc 6.10
> http://code.google.com/p/xmonad/issues/detail?id=226
>
> This seems to be a GHC optimization bug.  As a workaround, try this in 
> xmonad-contrib:
>
>> runghc Setup clean
>> runghc Setup configure --disable-optimization # and any other flags 
>> you usually pass

Yes, xmobar and xmonad-contrib work on 64 bit ghc-6.10.1 with 
--disable-optimization.