diff --git a/httprl.module b/httprl.module
index 70b7c9f..8b182f2 100644
--- a/httprl.module
+++ b/httprl.module
@@ -174,8 +174,8 @@ function httprl_menu() {
  * This hook should be ran about once a day to once an hour.
  */
 function httprl_cron() {
-  // Let expiration times vary by 30 seconds or so.
-  $fuzz_factor = 30;
+  // Let expiration times vary by 1 hour.
+  $fuzz_factor = 3600;
 
   // Remove expired locks from the semaphore database table.
   if (defined('VERSION') && substr(VERSION, 0, 1) >= 7) {
@@ -1213,6 +1213,11 @@ function httprl_send_request($results = NULL) {
           // Reset timer.
           $restart_timers = TRUE;
 
+          // Get lock if needed.
+          if (!empty($result->options['lock_name'])) {
+            httprl_acquire_lock($result);
+          }
+
           // If connection can not be established bail out here.
           if (!$result->fp) {
             // Do post processing on the stream.
@@ -1947,7 +1952,7 @@ function httprl_queue_background_callback(&$args, &$result = NULL) {
   }
 
   // Get the maximum amount of time this could take.
-  $times = array(HTTPRL_TIMEOUT, HTTPRL_GLOBAL_TIMEOUT);
+  $times = array(httprl_variable_get('httprl_timeout', HTTPRL_TIMEOUT), httprl_variable_get('httprl_global_timeout', HTTPRL_GLOBAL_TIMEOUT));
   if (isset($callback_options['options']['timeout'])) {
     $times[] = $callback_options['options']['timeout'];
   }
@@ -1955,42 +1960,21 @@ function httprl_queue_background_callback(&$args, &$result = NULL) {
     $times[] = $callback_options['options']['global_timeout'];
   }
 
-  // Acquire lock for this run.
-  $locked = FALSE;
+  // Create lock name for this run.
+  $available = FALSE;
   $lock_counter = 0;
-  while (!$locked && $lock_counter < 20) {
-    $id = 'httprl_' . hash('sha512', mt_rand() . time());
-    // Set lock to maximum amount of time.
-    $locked = lock_acquire($id, max($times));
+  while (!$available && $lock_counter < 20) {
+    $name = 'httprl_' . hash('sha512', mt_rand() . microtime(TRUE));
+    $available = lock_may_be_available($name);
     $lock_counter++;
   }
-
-  // Make sure lock exists after this process is dead.
-  if (empty($mode)) {
-    // Remove from the global locks variable.
-    global $locks;
-    unset($locks[$id]);
-
-    // Remove the lock_id reference in the database.
-    if (httprl_variable_get('lock_inc', './includes/lock.inc') === './includes/lock.inc') {
-      if (defined('VERSION') && substr(VERSION, 0, 1) >= 7) {
-        db_update('semaphore')
-          ->fields(array('value' => 'httprl'))
-          ->condition('name', $id)
-          ->condition('value', _lock_id())
-          ->execute();
-      }
-      else {
-        db_query("UPDATE {semaphore} SET value = '%s' WHERE name = '%s' AND value = '%s'", 'httprl', $id, _lock_id());
-      }
-    }
-  }
+  $callback_options['options']['lock_name'] = $name;
 
   // Create data array and options for request.
   $options = array(
     'data' => array(
       'master_key' => hash('sha512', httprl_drupal_get_private_key()),
-      'temp_key' => $id,
+      'temp_key' => $name,
       'mode' => $mode,
       'php_timeout' => max($times),
       'function' => $callback_options['function'],
@@ -2013,6 +1997,48 @@ function httprl_queue_background_callback(&$args, &$result = NULL) {
   return httprl_request($url, $options);
 }
 
+function httprl_acquire_lock(&$result) {
+  // Get the maximum amount of time this could take.
+  $times = array(httprl_variable_get('httprl_timeout', HTTPRL_TIMEOUT), httprl_variable_get('httprl_global_timeout', HTTPRL_GLOBAL_TIMEOUT));
+  if (isset($result->options['timeout'])) {
+    $times[] = $result->options['timeout'];
+  }
+  if (isset($result->options['global_timeout'])) {
+    $times[] = $result->options['global_timeout'];
+  }
+
+  // Acquire lock for this run.
+  $locked = FALSE;
+  $lock_counter = 0;
+  $name = $result->options['lock_name'];
+  while (!$locked && $lock_counter < 3) {
+    // Set lock to maximum amount of time.
+    $locked = lock_acquire($name, max($times));
+    $lock_counter++;
+  }
+
+  // Make sure lock exists after this process is dead.
+  if (empty($mode)) {
+    // Remove from the global locks variable.
+    global $locks;
+    unset($locks[$name]);
+
+    // Remove the lock_id reference in the database.
+    if (httprl_variable_get('lock_inc', './includes/lock.inc') === './includes/lock.inc') {
+      if (defined('VERSION') && substr(VERSION, 0, 1) >= 7) {
+        db_update('semaphore')
+          ->fields(array('value' => 'httprl'))
+          ->condition('name', $name)
+          ->condition('value', _lock_id())
+          ->execute();
+      }
+      else {
+        db_query("UPDATE {semaphore} SET value = '%s' WHERE name = '%s' AND value = '%s'", 'httprl', $name, _lock_id());
+      }
+    }
+  }
+}
+
 /**
  * Will decode chunked transfer-encoding and gzip/deflate content-encoding.
  *