Index: modules/proxy/mod_proxy.h
===================================================================
--- modules/proxy/mod_proxy.h	(revision 1629836)
+++ modules/proxy/mod_proxy.h	(working copy)
@@ -308,6 +308,7 @@
     void            *context;   /* general purpose storage */
     apr_size_t      busy;       /* busyness factor */
     int             lbset;      /* load balancer cluster set */
+    unsigned char   digest[APR_MD5_DIGESTSIZE]; /* hash of the worker->name */
 } proxy_worker_stat;
 
 /* Worker configuration */
@@ -772,6 +773,10 @@
 ap_proxy_buckets_lifetime_transform(request_rec *r, apr_bucket_brigade *from,
                                         apr_bucket_brigade *to);
 
+#if PROXY_HAS_SCOREBOARD
+void *ap_proxy_get_scoreboard_lb(proxy_worker *worker);
+#endif
+
 #define PROXY_LBMETHOD "proxylbmethod"
 
 /* The number of dynamic workers that can be added when reconfiguring.
Index: modules/proxy/mod_proxy_balancer.c
===================================================================
--- modules/proxy/mod_proxy_balancer.c	(revision 1629836)
+++ modules/proxy/mod_proxy_balancer.c	(working copy)
@@ -94,7 +94,7 @@
              * If the worker is not initialized check whether its scoreboard
              * slot is already initialized.
              */
-            slot = (proxy_worker_stat *) ap_get_scoreboard_lb(workers->id);
+            slot = (proxy_worker_stat *) ap_proxy_get_scoreboard_lb(workers);
             if (slot) {
                 worker_is_initialized = slot->status & PROXY_WORKER_INITIALIZED;
             }
Index: modules/proxy/proxy_util.c
===================================================================
--- modules/proxy/proxy_util.c	(revision 1629836)
+++ modules/proxy/proxy_util.c	(working copy)
@@ -1794,6 +1794,39 @@
 }
 #endif
 
+#if PROXY_HAS_SCOREBOARD
+void *ap_proxy_get_scoreboard_lb(proxy_worker *worker) {
+    int i = 0;
+    proxy_worker_stat *free_slot = NULL;
+    proxy_worker_stat *s;
+    apr_md5_ctx_t context;
+    unsigned char digest[APR_MD5_DIGESTSIZE];
+
+    if (!ap_scoreboard_image) {
+        return NULL;
+    }
+
+    apr_md5_init(&context);
+    apr_md5_update(&context, (const unsigned char *) worker->name,
+                   strlen(worker->name));
+    apr_md5_final(digest, &context);
+
+    /* Try to find out the right shared memory according to the hash
+     * of worker->name. */
+    while ((s = (proxy_worker_stat *)ap_get_scoreboard_lb(i++)) != NULL) {
+        if (memcmp(s->digest, digest, APR_MD5_DIGESTSIZE) == 0) {
+            return s; 
+        }
+        else if (s->status == 0 && free_slot == NULL) {
+            free_slot = s;
+        }
+    }
+
+    /* We failed to find out shared memory, so just use free slot */
+    return free_slot;
+};
+#endif
+
 /*
  * ap_proxy_initialize_worker_share() concerns itself
  * with initializing those parts of worker which
@@ -1803,6 +1836,7 @@
                                                      proxy_worker *worker,
                                                      server_rec *s)
 {
+    apr_md5_ctx_t context;
 #if PROXY_HAS_SCOREBOARD
     lb_score *score = NULL;
 #else
@@ -1819,10 +1853,10 @@
 #if PROXY_HAS_SCOREBOARD
         /* Get scoreboard slot */
     if (ap_scoreboard_image) {
-        score = ap_get_scoreboard_lb(worker->id);
+        score = ap_proxy_get_scoreboard_lb(worker);
         if (!score) {
             ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
-                  "proxy: ap_get_scoreboard_lb(%d) failed in child %" APR_PID_T_FMT " for worker %s",
+                  "proxy: ap_proxy_get_scoreboard_lb(%d) failed in child %" APR_PID_T_FMT " for worker %s",
                   worker->id, getpid(), worker->name);
         }
         else {
@@ -1863,6 +1897,11 @@
         *worker->s->redirect = '\0';
     }
 
+    apr_md5_init(&context);
+    apr_md5_update(&context, (const unsigned char *) worker->name,
+                   strlen(worker->name));
+    apr_md5_final(worker->s->digest, &context);
+
     worker->s->status |= (worker->status | PROXY_WORKER_INITIALIZED);
 
 }