On Thu, Jul 16, 2009 at 11:02:13AM -0300, Marco Túlio Gontijo e Silva wrote: > There's a bug in darcs that's only present in amd64 if it was built > with GHC older than 6.10. If you're talking about "darcs help" using 100% CPU instead of exiting, AFAIK it affects ALL 64-bit architectures when building with GHC 6.10.1.