diff -dur ../boost_1_48_0_orig/libs/mpi/src/communicator.cpp libs/mpi/src/communicator.cpp
--- ../boost_1_48_0_orig/libs/mpi/src/communicator.cpp	2007-11-25 12:38:02.000000000 -0600
+++ libs/mpi/src/communicator.cpp	2012-01-23 06:58:55.000000000 -0600
@@ -63,7 +63,7 @@
   MPI_Comm newcomm;
   BOOST_MPI_CHECK_RESULT(MPI_Comm_create, 
                          ((MPI_Comm)comm, (MPI_Group)subgroup, &newcomm));
-  comm_ptr.reset(new MPI_Comm(newcomm), comm_free());
+  communicator(*new MPI_Comm(newcomm), comm_take_ownership);
 }
 
 int communicator::size() const