diff --git a/app/SymfonyRequirements.php b/app/SymfonyRequirements.php
index caabe407b..b9d62f724 100644
--- a/app/SymfonyRequirements.php
+++ b/app/SymfonyRequirements.php
@@ -643,15 +643,15 @@ class SymfonyRequirements extends RequirementCollection
             'Install and enable the <strong>intl</strong> extension (used for validators).'
         );
 
-        if (class_exists('Collator')) {
+        if (extension_loaded('intl')) {
+            // in some WAMP server installations, new Collator() returns null
             $this->addRecommendation(
                 null !== new Collator('fr_FR'),
                 'intl extension should be correctly configured',
                 'The intl extension does not behave properly. This problem is typical on PHP 5.3.X x64 WIN builds.'
             );
-        }
 
-        if (class_exists('Locale')) {
+            // check for compatible ICU versions (only done when you have the intl extension)
             if (defined('INTL_ICU_VERSION')) {
                 $version = INTL_ICU_VERSION;
             } else {
@@ -670,6 +670,14 @@ class SymfonyRequirements extends RequirementCollection
                 'intl ICU version should be at least 4+',
                 'Upgrade your <strong>intl</strong> extension with a newer ICU version (4+).'
             );
+
+            $this->addPhpIniRecommendation(
+                'intl.error_level',
+                create_function('$cfgValue', 'return (int) $cfgValue === 0;'),
+                true,
+                'intl.error_level should be 0 in php.ini',
+                'Set "<strong>intl.error_level</strong>" to "<strong>0</strong>" in php.ini<a href="#phpini">*</a> to inhibit the messages when an error occurs in ICU functions.'
+            );
         }
 
         $accelerator =
diff --git a/composer.lock b/composer.lock
index c44ffee07..d32f09802 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1972,17 +1972,17 @@
         },
         {
             "name": "sensio/distribution-bundle",
-            "version": "v3.0.25",
+            "version": "v3.0.28",
             "target-dir": "Sensio/Bundle/DistributionBundle",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sensiolabs/SensioDistributionBundle.git",
-                "reference": "01931139b0f067a4016d5d56e82c2b3086533b89"
+                "reference": "8175618b07793b9d43c3be931f3d8d4c14c9e866"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sensiolabs/SensioDistributionBundle/zipball/01931139b0f067a4016d5d56e82c2b3086533b89",
-                "reference": "01931139b0f067a4016d5d56e82c2b3086533b89",
+                "url": "https://api.github.com/repos/sensiolabs/SensioDistributionBundle/zipball/8175618b07793b9d43c3be931f3d8d4c14c9e866",
+                "reference": "8175618b07793b9d43c3be931f3d8d4c14c9e866",
                 "shasum": ""
             },
             "require": {
@@ -2028,7 +2028,7 @@
                 "configuration",
                 "distribution"
             ],
-            "time": "2015-05-29 22:35:41"
+            "time": "2015-06-01 15:04:20"
         },
         {
             "name": "sensio/framework-extra-bundle",
@@ -3475,16 +3475,16 @@
         },
         {
             "name": "phpunit/php-code-coverage",
-            "version": "2.0.17",
+            "version": "2.1.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/php-code-coverage.git",
-                "reference": "c4e8e7725e351184a76544634855b8a9c405a6e3"
+                "reference": "6b7d2094ca2a685a2cad846cb7cd7a30e8b9470f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/c4e8e7725e351184a76544634855b8a9c405a6e3",
-                "reference": "c4e8e7725e351184a76544634855b8a9c405a6e3",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/6b7d2094ca2a685a2cad846cb7cd7a30e8b9470f",
+                "reference": "6b7d2094ca2a685a2cad846cb7cd7a30e8b9470f",
                 "shasum": ""
             },
             "require": {
@@ -3507,7 +3507,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.0.x-dev"
+                    "dev-master": "2.1.x-dev"
                 }
             },
             "autoload": {
@@ -3533,7 +3533,7 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2015-05-25 05:11:59"
+            "time": "2015-06-01 07:35:26"
         },
         {
             "name": "phpunit/php-file-iterator",