diff --git a/core/includes/batch.inc b/core/includes/batch.inc
index ff0b4cb..86dd0d9 100644
--- a/core/includes/batch.inc
+++ b/core/includes/batch.inc
@@ -71,6 +71,7 @@ function _batch_page() {
   }
 
   $op = isset($_REQUEST['op']) ? $_REQUEST['op'] : '';
+watchdog('debug', microtime(TRUE) . " JS calls /batch: _batch_page(), op=$op");
   $output = NULL;
   switch ($op) {
     case 'start':
@@ -104,6 +105,7 @@ function _batch_page() {
  * @see _batch_process()
  */
 function _batch_do() {
+watchdog('debug', microtime(TRUE) . ' _batch_do()');
   // Perform actual processing.
   list($percentage, $message) = _batch_process();
 
@@ -116,6 +118,7 @@ function _batch_do() {
  * @see _batch_process()
  */
 function _batch_progress_page() {
+watchdog('debug', microtime(TRUE) . ' _batch_progress_page()');
   $batch = &batch_get();
 
   $current_set = _batch_current_set();
@@ -200,6 +203,7 @@ function _batch_progress_page() {
  *   An array containing a completion value (in percent) and a status message.
  */
 function _batch_process() {
+watchdog('debug', microtime(TRUE) . ' _batch_process()');
   $batch       = &batch_get();
   $current_set = &_batch_current_set();
   // Indicate that this batch set needs to be initialized.
diff --git a/core/modules/locale/locale.batch.inc b/core/modules/locale/locale.batch.inc
index 8d87e48..de697c2 100644
--- a/core/modules/locale/locale.batch.inc
+++ b/core/modules/locale/locale.batch.inc
@@ -29,6 +29,7 @@
  * @see locale_translation_batch_status_compare()
 */
 function locale_translation_batch_status_fetch_remote($source, &$context) {
+watchdog('debug', microtime(TRUE) . ' locale_translation_batch_status_fetch_remote()');
   $t = get_t();
   // Check the translation file at the remote server and update the source
   // data with the remote status.
@@ -75,6 +76,7 @@ function locale_translation_batch_status_fetch_remote($source, &$context) {
  * @see locale_translation_batch_status_compare()
  */
 function locale_translation_batch_status_fetch_local($sources, &$context) {
+watchdog('debug', microtime(TRUE) . ' locale_translation_batch_status_fetch_local()');
   $t = get_t();
   // Get the status of local translation files and store the result data in the
   // batch results for later processing.
@@ -170,6 +172,7 @@ function locale_translation_batch_status_compare(&$context) {
  *   Batch results.
  */
 function locale_translation_batch_status_finished($success, $results) {
+watchdog('debug', microtime(TRUE) . ' locale_translation_batch_status_finished()');
   $t = get_t();
   if ($success) {
     if (isset($results['failed_files'])) {
@@ -213,6 +216,7 @@ function locale_translation_batch_status_finished($success, $results) {
  * @see locale_translation_batch_status_compare()
  */
 function locale_translation_batch_fetch_sources($projects, $langcodes, &$context) {
+watchdog('debug', microtime(TRUE) . ' locale_translation_batch_status_finished()');
   $context['results']['input'] = locale_translation_load_sources($projects, $langcodes);
 
   // If this batch operation is preceded by the status check operations, the
@@ -243,6 +247,7 @@ function locale_translation_batch_fetch_sources($projects, $langcodes, &$context
  * @see locale_translation_batch_status_compare()
  */
 function locale_translation_batch_fetch_download($project, $langcode, &$context) {
+watchdog('debug', microtime(TRUE) . ' locale_translation_batch_status_finished()');
   $sources = $context['results']['input'];
   if (isset($sources[$project . ':' . $langcode])) {
     $source = $sources[$project . ':' . $langcode];
@@ -286,6 +291,7 @@ function locale_translation_batch_fetch_download($project, $langcode, &$context)
  * @see locale_translation_batch_status_compare()
  */
 function locale_translation_batch_fetch_import($project, $langcode, $options, &$context) {
+watchdog('debug', microtime(TRUE) . ' locale_translation_batch_fetch_import()');
   $sources = $context['results']['input'];
   if (isset($sources[$project . ':' . $langcode])) {
     $source = $sources[$project . ':' . $langcode];
@@ -383,6 +389,7 @@ function locale_translation_batch_fetch_import($project, $langcode, $options, &$
  * @see locale_translation_batch_status_compare()
  */
 function locale_translation_batch_fetch_update_status(&$context) {
+watchdog('debug', microtime(TRUE) . ' locale_translation_batch_fetch_update_status()');
   $t = get_t();
   $results = array();
 
@@ -424,6 +431,7 @@ function locale_translation_batch_fetch_update_status(&$context) {
  *   Batch results.
  */
 function locale_translation_batch_fetch_finished($success, $results) {
+watchdog('debug', microtime(TRUE) . ' locale_translation_batch_fetch_finished()');
   module_load_include('bulk.inc', 'locale');
   return locale_translate_batch_finished($success, $results);
 }
@@ -442,7 +450,9 @@ function locale_translation_batch_fetch_finished($success, $results) {
  *   FALSE if a fault occured.
  */
 function locale_translation_http_check($uri, $headers = array()) {
+watchdog('debug', microtime(TRUE) . ' locale_translation_http_check(): http call started');
   $result = drupal_http_request($uri, array('headers' => $headers, 'method' => 'HEAD'));
+watchdog('debug', microtime(TRUE) . ' locale_translation_http_check(): http call completed');
   if (!isset($result->error)) {
     if ($result->code == 200) {
       $result->updated = isset($result->headers['last-modified']) ? strtotime($result->headers['last-modified']) : 0;
diff --git a/core/modules/locale/locale.fetch.inc b/core/modules/locale/locale.fetch.inc
index d509b69..812c726 100755
--- a/core/modules/locale/locale.fetch.inc
+++ b/core/modules/locale/locale.fetch.inc
@@ -27,6 +27,7 @@
  *   Batch definition array.
  */
 function locale_translation_batch_update_build($projects = array(), $langcodes = array(), $options = array()) {
+watchdog ('debug', microtime(TRUE) . ' Build batch: locale_translation_batch_update_build()');
   module_load_include('compare.inc', 'locale');
   $t = get_t();
   $projects = $projects ? $projects : array_keys(locale_translation_get_projects());