diff --git a/dmemcache.inc b/dmemcache.inc
index b634c25..65fc53a 100644
--- a/dmemcache.inc
+++ b/dmemcache.inc
@@ -42,6 +42,13 @@ function dmemcache_set($key, $value, $exp = 0, $bin = 'cache') {
     }
   }
   $_memcache_statistics[] = array('set', $bin, $full_key, (int)$success);
+  
+  if ($success === FALSE) {
+    $item_size = strlen(serialize($value));    
+    watchdog('memcache', 'Cache set attempt failed. Key: <em>!key</em>. Cache bin: <em>!bin</em>. Item size (uncompressed): <em>!kb KB</em>.', 
+    		 array('!key' => $key, '!bin' => $bin, '!kb' => round($item_size/1024)), WATCHDOG_WARNING);
+  }
+  
   return $success;
 }