Hello, > My stats look very different. > > 6 RuleFired > 1 ++ > 2 <=# > 1 foldr/app > 1 unpack > 1 unpack-list > > Are your libraries compiled with -O2? I don't know. How can I check? I just installed ghc-7.0 by "perl boot; configure; make; make install". --Kazu