diff --git a/ompi/mca/pml/v/protocol_pessimist/vprotocol_pessimist_sender_based.c b/ompi/mca/pml/v/protocol_pessimist/vprotocol_pessimist_sender_based.c
index 72004917cd..d024d37ab8 100644
--- a/ompi/mca/pml/v/protocol_pessimist/vprotocol_pessimist_sender_based.c
+++ b/ompi/mca/pml/v/protocol_pessimist/vprotocol_pessimist_sender_based.c
@@ -31,7 +31,7 @@ int vprotocol_pessimist_sender_based_init(const char *mmapfile, size_t size)
     sb.sb_fd = open(path, O_CREAT | O_TRUNC | O_RDWR, 0600);
     if(-1 == sb.sb_fd)
     {
-        opal_output(1, "pml_v: vprotocol_pessimist: sender_based_init: open (%s): %s", 
+        opal_output(0, "pml_v: vprotocol_pessimist: sender_based_init: open (%s): %s", 
                     path, strerror(errno));
         return -1;
     }
@@ -44,19 +44,19 @@ void vprotocol_pessimist_sender_based_finalize(void)
     
     if(sb.sb_comm != MPI_COMM_NULL)
     {
-/* TODO: cleanup that works... 
+/* TODO: check this has already been freed by MPI_Finalize 
  *         ret = ompi_comm_free(&sb.sb_comm);
  *         if(MPI_SUCCESS != ret) 
- *             opal_output(1, "pml_v: protocol_pessimist: sender_based_finalize: ompi_comm_free failed (%d)", ret);
+ *             opal_output(0, "pml_v: protocol_pessimist: sender_based_finalize: ompi_comm_free failed (%d)", ret);
  */
         ret = munmap(sb.sb_addr, sb.sb_length);
         if(-1 == ret)
-            opal_output(1, "pml_v: protocol_pessimsit: sender_based_finalize: munmap (%p): %s", 
+            opal_output(0, "pml_v: protocol_pessimsit: sender_based_finalize: munmap (%p): %s", 
                         sb.sb_addr, strerror(errno));
     }
     ret = close(sb.sb_fd);
     if(-1 == ret)
-        opal_output(1, "pml_v: protocol_pessimist: sender_based_finalize: close (%d): %s", 
+        opal_output(0, "pml_v: protocol_pessimist: sender_based_finalize: close (%d): %s", 
                     sb.sb_fd, strerror(errno));
 }
 
@@ -73,12 +73,12 @@ void vprotocol_pessimist_sender_based_alloc(size_t len)
 
     /* Take care of alignement of sb_offset                             */
     sb.sb_offset += (intptr_t) sb.sb_cursor - (intptr_t) sb.sb_addr;
-    sb.sb_cursor = (char *) (sb.sb_offset % sb.sb_pagesize); /* pos in window */
-    sb.sb_offset -= (off_t) sb.sb_cursor;        /* position of window */ 
+    sb.sb_cursor = (char *) ((intptr_t) (sb.sb_offset % sb.sb_pagesize));
+    sb.sb_offset -= (intptr_t) sb.sb_cursor; 
 
     /* Adjusting sb_length for the largest application message to fit   */
     if(sb.sb_length < len)
-        sb.sb_length = len + (off_t) sb.sb_cursor;
+        sb.sb_length = len + (size_t) sb.sb_cursor;
 
     if(-1 == lseek(sb.sb_fd, sb.sb_offset + sb.sb_length, SEEK_SET))
     {
diff --git a/ompi/mca/pml/v/protocol_pessimist/vprotocol_pessimist_sender_based.h b/ompi/mca/pml/v/protocol_pessimist/vprotocol_pessimist_sender_based.h
index a9d94640b9..8ee1b5acc7 100644
--- a/ompi/mca/pml/v/protocol_pessimist/vprotocol_pessimist_sender_based.h
+++ b/ompi/mca/pml/v/protocol_pessimist/vprotocol_pessimist_sender_based.h
@@ -39,7 +39,7 @@ typedef struct vprotocol_pessimist_sender_based_header_t
     int dst; 
     int tag;
     uint32_t contextid;
-    uint64_t sequence;
+    vprotocol_pessimist_clock_t sequence;
 } vprotocol_pessimist_sender_based_header_t;
 
 int vprotocol_pessimist_sender_based_init(const char *mmapfile, size_t size);
@@ -98,7 +98,7 @@ void vprotocol_pessimist_sender_based_alloc(size_t len);
     mca_vprotocol_pessimist.sender_based.sb_cursor += sbhdr->size;            \
     mca_vprotocol_pessimist.sender_based.sb_vacant -= (sbhdr->size +          \
             sizeof(vprotocol_pessimist_sender_based_header_t));               \
-    V_OUTPUT_VERBOSE(70, "pessimist:\tsb\twrite\t%x\tsize %ld", VPESSIMIST_REQ(&req->req_base)->reqid, sbhdr->size); \
+    V_OUTPUT_VERBOSE(70, "pessimist:\tsb\twrite\t%"PRIpclock"\tsize %ld", VPESSIMIST_REQ(&req->req_base)->reqid, sbhdr->size); \
 } while(0)
 
 /** Copy data associated to a pml_base_send_request_t to the sender based