Dear all,
         We have just released a 1.0.4p1 patch release of MPICH2. The patch
release fixes a few problems in the 1.0.4 release, such as the Nemesis
configure problem and a few other minor bugs. If you already have a working
1.0.4, you need not switch to 1.0.4p1.
Regards,
The MPICH2 Team