diff --git a/ompi/mpi/c/gather.c b/ompi/mpi/c/gather.c
index 898579f62e..38275a383d 100644
--- a/ompi/mpi/c/gather.c
+++ b/ompi/mpi/c/gather.c
@@ -9,6 +9,7 @@
  *                         University of Stuttgart.  All rights reserved.
  * Copyright (c) 2004-2005 The Regents of the University of California.
  *                         All rights reserved.
+ * Copyright (c) 2006      Cisco Systems, Inc.  All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -45,7 +46,7 @@ int MPI_Gather(void *sendbuf, int sendcount, MPI_Datatype sendtype,
             return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM, 
                                           FUNC_NAME);
 	} else if ((ompi_comm_rank(comm) != root && MPI_IN_PLACE == sendbuf) ||
-                   MPI_IN_PLACE == recvbuf) {
+                   (ompi_comm_rank(comm) == root && MPI_IN_PLACE == recvbuf)) {
             return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
         }
 
@@ -118,7 +119,7 @@ int MPI_Gather(void *sendbuf, int sendcount, MPI_Datatype sendtype,
          (ompi_comm_rank(comm) != root ||
           (ompi_comm_rank(comm) == root && MPI_IN_PLACE != sendbuf))) ||
         (ompi_comm_rank(comm) == root && MPI_IN_PLACE == sendbuf && 
-         0 == recvbuf)) {
+         0 == recvcount)) {
         return MPI_SUCCESS;
     }
 
diff --git a/ompi/mpi/c/gatherv.c b/ompi/mpi/c/gatherv.c
index 66befe91fa..3a5be2aaf5 100644
--- a/ompi/mpi/c/gatherv.c
+++ b/ompi/mpi/c/gatherv.c
@@ -9,6 +9,7 @@
  *                         University of Stuttgart.  All rights reserved.
  * Copyright (c) 2004-2005 The Regents of the University of California.
  *                         All rights reserved.
+ * Copyright (c) 2006      Cisco Systems, Inc.  All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -45,7 +46,7 @@ int MPI_Gatherv(void *sendbuf, int sendcount, MPI_Datatype sendtype,
             return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM, 
                                           FUNC_NAME);
 	} else if ((ompi_comm_rank(comm) != root && MPI_IN_PLACE == sendbuf) ||
-                   MPI_IN_PLACE == recvbuf) {
+                   (ompi_comm_rank(comm) == root && MPI_IN_PLACE == recvbuf)) {
             return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
 	}
 
diff --git a/ompi/mpi/c/reduce.c b/ompi/mpi/c/reduce.c
index c3e24ac72b..0a0ef3d0d0 100644
--- a/ompi/mpi/c/reduce.c
+++ b/ompi/mpi/c/reduce.c
@@ -9,6 +9,7 @@
  *                         University of Stuttgart.  All rights reserved.
  * Copyright (c) 2004-2005 The Regents of the University of California.
  *                         All rights reserved.
+ * Copyright (c) 2006      Cisco Systems, Inc.  All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -55,8 +56,8 @@ int MPI_Reduce(void *sendbuf, void *recvbuf, int count,
             int ret = OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_OP, msg);
             free(msg);
             return ret;
-        } else if ((root != ompi_comm_rank(comm) && MPI_IN_PLACE == sendbuf) ||
-                   MPI_IN_PLACE == recvbuf) {
+        } else if ((ompi_comm_rank(comm) != root && MPI_IN_PLACE == sendbuf) ||
+                   (ompi_comm_rank(comm) == root && MPI_IN_PLACE == recvbuf)) {
           err = MPI_ERR_ARG;
         } else {
           OMPI_CHECK_DATATYPE_FOR_SEND(err, datatype, count);
diff --git a/ompi/mpi/c/scatter.c b/ompi/mpi/c/scatter.c
index d3881a19c9..441c9e2069 100644
--- a/ompi/mpi/c/scatter.c
+++ b/ompi/mpi/c/scatter.c
@@ -9,6 +9,7 @@
  *                         University of Stuttgart.  All rights reserved.
  * Copyright (c) 2004-2005 The Regents of the University of California.
  *                         All rights reserved.
+ * Copyright (c) 2006      Cisco Systems, Inc.  All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -46,7 +47,7 @@ int MPI_Scatter(void *sendbuf, int sendcount, MPI_Datatype sendtype,
             return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM, 
                                           FUNC_NAME);
         } else if ((ompi_comm_rank(comm) != root && MPI_IN_PLACE == recvbuf) ||
-                   MPI_IN_PLACE == sendbuf) {
+                   (ompi_comm_rank(comm) == root && MPI_IN_PLACE == sendbuf)) {
             return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
         }
 
diff --git a/ompi/mpi/c/scatterv.c b/ompi/mpi/c/scatterv.c
index 608c613e81..7ace4b8ccd 100644
--- a/ompi/mpi/c/scatterv.c
+++ b/ompi/mpi/c/scatterv.c
@@ -9,6 +9,7 @@
  *                         University of Stuttgart.  All rights reserved.
  * Copyright (c) 2004-2005 The Regents of the University of California.
  *                         All rights reserved.
+ * Copyright (c) 2006      Cisco Systems, Inc.  All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -45,7 +46,7 @@ int MPI_Scatterv(void *sendbuf, int *sendcounts, int *displs,
             return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM, 
                                           FUNC_NAME);
         } else if ((ompi_comm_rank(comm) != root && MPI_IN_PLACE == recvbuf) ||
-                   MPI_IN_PLACE == sendbuf) {
+                   (ompi_comm_rank(comm) == root && MPI_IN_PLACE == sendbuf)) {
             return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
         }