diff -Naur lammps-30Sep08/src/fix_com.cpp lammps-1Oct08/src/fix_com.cpp
--- lammps-30Sep08/src/fix_com.cpp	2008-05-09 09:01:25.000000000 -0600
+++ lammps-1Oct08/src/fix_com.cpp	2008-10-01 09:25:39.000000000 -0600
@@ -85,6 +85,8 @@
   double xcm[3];
   group->xcm(igroup,masstotal,xcm);
 
-  if (me == 0) fprintf(fp,"%d %g %g %g\n",
-		       update->ntimestep,xcm[0],xcm[1],xcm[2]);
+  if (me == 0) {
+    fprintf(fp,"%d %g %g %g\n",update->ntimestep,xcm[0],xcm[1],xcm[2]);
+    fflush(fp);
+  }
 }
diff -Naur lammps-30Sep08/src/fix_gyration.cpp lammps-1Oct08/src/fix_gyration.cpp
--- lammps-30Sep08/src/fix_gyration.cpp	2008-05-09 09:01:06.000000000 -0600
+++ lammps-1Oct08/src/fix_gyration.cpp	2008-10-01 09:25:39.000000000 -0600
@@ -86,5 +86,8 @@
   group->xcm(igroup,masstotal,xcm);
   double rg = group->gyration(igroup,masstotal,xcm);
 
-  if (me == 0) fprintf(fp,"%d %g\n",update->ntimestep,rg);
+  if (me == 0) {
+    fprintf(fp,"%d %g\n",update->ntimestep,rg);
+    fflush(fp);
+  }
 }
diff -Naur lammps-30Sep08/src/fix_msd.cpp lammps-1Oct08/src/fix_msd.cpp
--- lammps-30Sep08/src/fix_msd.cpp	2008-08-20 15:21:04.000000000 -0600
+++ lammps-1Oct08/src/fix_msd.cpp	2008-10-01 09:25:39.000000000 -0600
@@ -242,8 +242,11 @@
   msd_all[2] /= nmsd;
   msd_all[3] /= nmsd;
 
-  if (me == 0) fprintf(fp,"%d %g %g %g %g\n",update->ntimestep,
-		       msd_all[0],msd_all[1],msd_all[2],msd_all[3]);
+  if (me == 0) {
+    fprintf(fp,"%d %g %g %g %g\n",update->ntimestep,
+	    msd_all[0],msd_all[1],msd_all[2],msd_all[3]);
+    fflush(fp);
+  }
 }
 
 /* ----------------------------------------------------------------------
diff -Naur lammps-30Sep08/src/fix_print.cpp lammps-1Oct08/src/fix_print.cpp
--- lammps-30Sep08/src/fix_print.cpp	2008-05-09 09:01:06.000000000 -0600
+++ lammps-1Oct08/src/fix_print.cpp	2008-10-01 09:25:39.000000000 -0600
@@ -114,6 +114,9 @@
   if (me == 0) {
     if (screenflag && screen) fprintf(screen,copy);
     if (screenflag && logfile) fprintf(logfile,copy);
-    if (fp) fprintf(fp,copy);
+    if (fp) {
+      fprintf(fp,copy);
+      fflush(fp);
+    }
   }
 }
diff -Naur lammps-30Sep08/src/fix_rdf.cpp lammps-1Oct08/src/fix_rdf.cpp
--- lammps-30Sep08/src/fix_rdf.cpp	2008-05-09 09:01:06.000000000 -0600
+++ lammps-1Oct08/src/fix_rdf.cpp	2008-10-01 09:25:39.000000000 -0600
@@ -323,5 +323,7 @@
       }
       fprintf(fp,"\n");
     }
+
+    fflush(fp);
   }
 }
diff -Naur lammps-30Sep08/src/fix_tmd.cpp lammps-1Oct08/src/fix_tmd.cpp
--- lammps-30Sep08/src/fix_tmd.cpp	2008-05-09 09:01:25.000000000 -0600
+++ lammps-1Oct08/src/fix_tmd.cpp	2008-10-01 09:25:39.000000000 -0600
@@ -287,6 +287,7 @@
       fprintf(fp,"%d %g %g %g %g %g %g %g\n",
 	      update->ntimestep,rho_target,rho_old,
               gamma_back,gamma_forward,lambda,work_lambda,work_analytical);
+      fflush(fp);
       previous_stat = update->ntimestep;
     }
   }