9 Apr
                
                    2008
                
            
            
                9 Apr
                
                '08
                
            
            
            
        
    
                5:58 p.m.
            
        On Wed, Apr 9, 2008 at 2:25 PM, Sebastian Sylvan
Nope!
This is GHC 6.8.2 btw, downloaded the binary from the web site, so it's nothing strange.
On my hyper-threaded CPU, your original code works fine. With -N2, I see 100% CPU. With N1, only 50%. I am also using GHC 6.8.2. Justin