diff --git a/checkin_notes b/checkin_notes
index e876066011..25e2d05a94 100755
--- a/checkin_notes
+++ b/checkin_notes
@@ -2315,3 +2315,12 @@ David  10 Mar 2007
 
     sched/
         server_types.C
+
+David  10 Mar 2007
+    - scheduler: add one_result_per_host_per_wu option.
+        This is useful if you use homogeneous redundancy
+        and most hosts of a particular class belong to a single user.
+
+    sched/
+        sched_array.C
+        sched_config.C,h
diff --git a/doc/files.php b/doc/files.php
index 299745c9a2..b3e621d663 100644
--- a/doc/files.php
+++ b/doc/files.php
@@ -100,6 +100,8 @@ Use the Apache 2.0 mod_deflate module to automatically
 compress files on the fly.
 This method will work with all BOINC clients,
 but it will do compression only for 5.4+ clients.
+Here is a <a href=apache_deflate.txt>cookbook</a>
+on how to configure this.
 
 <li>
 Compress files and give them a filename suffix such as '.gz'.
diff --git a/doc/project_options.php b/doc/project_options.php
index 892d477472..eab4f614d1 100644
--- a/doc/project_options.php
+++ b/doc/project_options.php
@@ -208,6 +208,7 @@ echo html_text("
 [ <default_disk_max_used_gb> X </default_disk_max_used_gb> ]
 [ <default_disk_max_used_pct> X </default_disk_max_used_pct> ]
 [ <default_disk_min_free_gb> X </default_disk_min_used_pct> ]
+[ <one_result_per_host_per_wu/> ]
 ");
 list_start();
 list_option("one_result_per_user_per_wu",
@@ -374,6 +375,12 @@ list_item("reliable_time<br> reliable_min_avg_credit<br>
     (typically 0.5 or so).
     "
 );
+list_option("one_result_per_host_per_wu",
+    "If present, send at most one result of a given workunit to a given host.
+    This is weaker than one_result_per_user_per_wu;
+    it is useful if you're using homogeneous redundancy and
+    most of the hosts of a particular class belong to a single user."
+);
 list_end();
 
 echo "
diff --git a/sched/sched_array.C b/sched/sched_array.C
index 55ed0c7741..f5572aa5f8 100644
--- a/sched/sched_array.C
+++ b/sched/sched_array.C
@@ -110,8 +110,8 @@ void scan_work_array(
         	}
         }
         
-        // If we are looking for infeasible results and the result is not infeasiable
-        // then move on
+        // don't send if we are looking for infeasible results
+        // and the result is not infeasible
         //
         if (reply.wreq.infeasible_only && (wu_result.infeasible_count==0)) {
             continue;
@@ -119,7 +119,7 @@ void scan_work_array(
         
         // don't send if we're already sending a result for same WU
         //
-        if (config.one_result_per_user_per_wu) {
+        if (config.one_result_per_user_per_wu || config.one_result_per_host_per_wu) {
             if (wu_already_in_reply(wu_result.workunit, reply)) {
         		continue;
             }
@@ -194,6 +194,33 @@ void scan_work_array(
                     goto dont_send;
                 }
             }
+        } else if (config.one_result_per_host_per_wu) {
+            // Don't send if we've already sent a result
+            // of this WU to this host.
+            // We only have to check this
+            // if we don't send one result per user.
+            //
+            sprintf(buf,
+                "where workunitid=%d and hostid=%d",
+                wu_result.workunit.id, reply.host.id
+            );
+            retval = result.count(n, buf);
+            if (retval) {
+                log_messages.printf(
+                    SCHED_MSG_LOG::MSG_CRITICAL,
+                    "send_work: can't get result count (%d)\n", retval
+                );
+                goto dont_send;
+            } else {
+                if (n>0) {
+                    log_messages.printf(
+                        SCHED_MSG_LOG::MSG_DEBUG,
+                        "send_work: host %d already has %d result(s) for WU %d\n",
+                        reply.host.id, n, wu_result.workunit.id
+                    );
+                    goto dont_send;
+                }
+            }
         }
 
         // if desired, make sure redundancy is homogeneous
diff --git a/sched/sched_config.C b/sched/sched_config.C
index 445dffb266..ea56c2a7aa 100644
--- a/sched/sched_config.C
+++ b/sched/sched_config.C
@@ -79,6 +79,7 @@ int SCHED_CONFIG::parse(FILE* f) {
         else if (xp.parse_str(tag, "upload_dir", upload_dir, sizeof(upload_dir))) continue;
         else if (xp.parse_str(tag, "sched_lockfile_dir", sched_lockfile_dir, sizeof(sched_lockfile_dir))) continue;
         else if (xp.parse_bool(tag, "one_result_per_user_per_wu", one_result_per_user_per_wu)) continue;
+        else if (xp.parse_bool(tag, "one_result_per_host_per_wu", one_result_per_host_per_wu)) continue;
         else if (xp.parse_bool(tag, "non_cpu_intensive", non_cpu_intensive)) continue;
         else if (xp.parse_bool(tag, "verify_files_on_app_start", verify_files_on_app_start)) continue;
         else if (xp.parse_bool(tag, "homogeneous_redundancy", homogeneous_redundancy)) continue;
diff --git a/sched/sched_config.h b/sched/sched_config.h
index 1caccecb45..f68785db99 100644
--- a/sched/sched_config.h
+++ b/sched/sched_config.h
@@ -41,6 +41,7 @@ public:
     char upload_dir[256];
     char sched_lockfile_dir[256];
     bool one_result_per_user_per_wu;
+    bool one_result_per_host_per_wu;
     bool msg_to_host;
     int min_sendwork_interval;
     int max_wus_to_send;