[xmonad] XMonad.Prompt.Shell crashes X11 to console

Hello, I updated xmonad-0.6(darcs) yesterday and since then XMonad.Pompt.Shell crashes xmonad to console. Steps to reproduce : 1) Spawn Shell prompt 2) type anything (doesnt have to be a valid command) 3) Press <CR> 4) X11 crashes to console with following message : xmonad-i386-linux: internal error: PAP object entered! (GHC version 6.8.2 for i386_unknown_linux) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug My full xmonad.hs config (http://pastebin.com/m6804d9e1) and xinitrc (http://pastebin.com/m42de0648) if needed. Don't know what other relevant info to give, so don't hesitate to ask. In the mean time, back to dmenu. Bests and long live XMonad :) Alexandre