diff --git a/checkin_notes b/checkin_notes
index 1782868729..d597e9f636 100755
--- a/checkin_notes
+++ b/checkin_notes
@@ -18692,3 +18692,11 @@ David  20 Oct 2004
         app.C
         client_types.C
         cs_statefile.C
+
+David  20 Oct 2004
+    - commented out frac_rate_of_change stuff
+        (too much complexity per unit value)
+
+    client/
+        app.C,h
+        app_control.C
diff --git a/client/app.C b/client/app.C
index 8d9953bdec..a120bf92f1 100644
--- a/client/app.C
+++ b/client/app.C
@@ -88,10 +88,12 @@ ACTIVE_TASK::ACTIVE_TASK() {
     graphics_mode_before_ss = MODE_HIDE_GRAPHICS;
 
     fraction_done = 0;
+#if 0
     frac_rate_of_change = 0;
     last_frac_done = 0;
     recent_change = 0;
     last_frac_update = 0;
+#endif
     episode_start_cpu_time = 0;
     cpu_time_at_last_sched = 0;
     checkpoint_cpu_time = 0;
@@ -225,6 +227,7 @@ int ACTIVE_TASK_SET::remove(ACTIVE_TASK* atp) {
     return ERR_NOT_FOUND;
 }
 
+#if 0
 // compute frac_rate_of_change
 //
 void ACTIVE_TASK::estimate_frac_rate_of_change(double now) {
@@ -249,6 +252,7 @@ void ACTIVE_TASK::estimate_frac_rate_of_change(double now) {
         }
     }
 }
+#endif
 
 // There's a new trickle file.
 // Move it from slot dir to project dir
@@ -278,7 +282,7 @@ int ACTIVE_TASK::move_trickle_file() {
 // based on current reported CPU time and fraction done
 //
 double ACTIVE_TASK::est_cpu_time_to_completion() {
-    if (fraction_done <= 0 || fraction_done > 1 || frac_rate_of_change <= 0) {
+    if (fraction_done <= 0 || fraction_done > 1) {
         return -1;
     }
     return (current_cpu_time / fraction_done) - current_cpu_time;
diff --git a/client/app.h b/client/app.h
index eb6affdb1c..b7b2130afe 100644
--- a/client/app.h
+++ b/client/app.h
@@ -97,11 +97,13 @@ public:
         // App's estimate of how much of the work unit is done.
         // Passed from the application via an API call;
         // will be zero if the app doesn't use this call
+#if 0
     double frac_rate_of_change;
         // How much the percent done changes per second,
         // based on a recent exponential weighted average
     double last_frac_done, recent_change;
     double last_frac_update;
+#endif
     double cpu_time_at_last_sched;
         // CPU time when CPU scheduler last ran
     double episode_start_cpu_time;
diff --git a/client/app_control.C b/client/app_control.C
index a278315360..6d11c847cd 100644
--- a/client/app_control.C
+++ b/client/app_control.C
@@ -869,7 +869,7 @@ bool ACTIVE_TASK_SET::get_msgs() {
         if (!atp->process_exists()) continue;
         old_time = atp->checkpoint_cpu_time;
         if (atp->get_app_status_msg()) {
-            atp->estimate_frac_rate_of_change(now);
+            //atp->estimate_frac_rate_of_change(now);
             if (old_time != atp->checkpoint_cpu_time) {
                 action = true;
             }