diff --git a/checkin_notes b/checkin_notes
index e284ed2e4a..7ac1c81927 100755
--- a/checkin_notes
+++ b/checkin_notes
@@ -25175,3 +25175,15 @@ Rom    22 Feb 2005
         MainFrame.cpp
     lib/
         gui_rpc_client.C, .h
+
+David  22 Feb 2005
+    - backend processes: centralize avg_turnaround updating,
+        and write log messages
+    - backend programs: define CRITICAL/NORMAL/DEBUG as 1/2/3
+        so that message logging works as advertised
+
+    sched/
+        sched_msgs.h
+        sched_util.C,h
+        transitioner.C
+        validator.C
diff --git a/sched/sched_msgs.h b/sched/sched_msgs.h
index e097e3765e..bb96aa28e9 100644
--- a/sched/sched_msgs.h
+++ b/sched/sched_msgs.h
@@ -25,9 +25,9 @@ class SCHED_MSG_LOG : public MSG_LOG {
     bool v_message_wanted(int kind) const;
 public:
     enum Kind {
-        CRITICAL,
-        NORMAL,
-        DEBUG
+        CRITICAL=1,
+        NORMAL=2,
+        DEBUG=3
     };
     SCHED_MSG_LOG(): MSG_LOG(stderr) {}
     void set_debug_level(int new_level) { debug_level = new_level; }
diff --git a/sched/sched_util.C b/sched/sched_util.C
index c8519364da..7709664728 100644
--- a/sched/sched_util.C
+++ b/sched/sched_util.C
@@ -208,4 +208,18 @@ int extract_filename(char* in, char* out) {
     return 0;
 }
 
+void compute_avg_turnaround(HOST& host, double turnaround) {
+    double new_avg;
+    if (host.avg_turnaround == 0) {
+        new_avg = turnaround;
+    } else {
+        new_avg = .7*host.avg_turnaround + .3*turnaround;
+    }
+    log_messages.printf(SCHED_MSG_LOG::NORMAL,
+        "turnaround %f; old %f; new %f\n",
+        turnaround, host.avg_turnaround, new_avg
+    );
+    host.avg_turnaround = new_avg;
+}
+
 const char *BOINC_RCSID_affa6ef1e4 = "$Id$";
diff --git a/sched/sched_util.h b/sched/sched_util.h
index 996ac6410e..ee9f57bc8d 100644
--- a/sched/sched_util.h
+++ b/sched/sched_util.h
@@ -20,6 +20,8 @@
 #ifndef SCHED_UTIL_H
 #define SCHED_UTIL_H
 
+#include "boinc_db.h"
+
 // "average credit" uses an exponential decay so that recent
 // activity is weighted more heavily.
 // CREDIT_HALF_LIFE is the "half-life" period:
@@ -54,4 +56,6 @@ extern int dir_hier_url(
 //
 extern int extract_filename(char* in, char* out);
 
+extern void compute_avg_turnaround(HOST& host, double turnaround);
+
 #endif
diff --git a/sched/transitioner.C b/sched/transitioner.C
index 3e65132df8..5e3cff318d 100644
--- a/sched/transitioner.C
+++ b/sched/transitioner.C
@@ -69,12 +69,7 @@ int penalize_host(int hostid, double delay_bound) {
     char buf[256];
     int retval = host.lookup_id(hostid);
     if (retval) return retval;
-    if (host.avg_turnaround == 0) {
-        host.avg_turnaround = delay_bound;
-    } else {
-        host.avg_turnaround = .7*host.avg_turnaround + .3*delay_bound;
-    }
-
+    compute_avg_turnaround(host, delay_bound);
     sprintf(buf, "avg_turnaround=%f", host.avg_turnaround);
     return host.update_field(buf);
 }
diff --git a/sched/validator.C b/sched/validator.C
index 0123aa076d..9269634121 100644
--- a/sched/validator.C
+++ b/sched/validator.C
@@ -112,11 +112,7 @@ int grant_credit(RESULT& result, double credit) {
     update_average(result.sent_time, credit, CREDIT_HALF_LIFE, host.expavg_credit, host.expavg_time);
 
     double turnaround = result.received_time - result.sent_time;
-    if (host.avg_turnaround == 0) {
-        host.avg_turnaround = turnaround;
-    } else {
-        host.avg_turnaround = .7*host.avg_turnaround + .3*turnaround;
-    }
+    compute_avg_turnaround(host, turnaround);
 
     sprintf(
         buf,