diff --git a/lib/configfiles/freebsd.inc.php b/lib/configfiles/freebsd.inc.php
index 433ae021..a7e2fbfc 100644
--- a/lib/configfiles/freebsd.inc.php
+++ b/lib/configfiles/freebsd.inc.php
@@ -403,7 +403,8 @@ return array(
 							'chmod 600 /usr/local/etc/libnss-mysql.cfg /usr/local/etc/libnss-mysql-root.cfg'
 						),
 						'restart' => array(
-							'sh /etc/rc.d/nscd restart'
+							'sh /etc/rc.d/nscd restart',
+                                                        'nscd --invalidate=group'
 						)
 					),
 					'logrotate' => array(
diff --git a/lib/configfiles/gentoo.inc.php b/lib/configfiles/gentoo.inc.php
index 898939c4..16126caa 100644
--- a/lib/configfiles/gentoo.inc.php
+++ b/lib/configfiles/gentoo.inc.php
@@ -410,7 +410,8 @@ milter_default_action = accept" >> /etc/postfix/main.cf',
 							'rc-update add nscd default'
 						),
 						'restart' => array(
-							'/etc/init.d/nscd restart'
+							'/etc/init.d/nscd restart',
+							'nscd --invalidate=group'
 						)
 					),
 					'logrotate' => array(
diff --git a/lib/configfiles/lucid.inc.php b/lib/configfiles/lucid.inc.php
index c257672b..5d99d101 100644
--- a/lib/configfiles/lucid.inc.php
+++ b/lib/configfiles/lucid.inc.php
@@ -393,7 +393,8 @@ return array(
 							'etc_nsswitch.conf' => '/etc/nsswitch.conf',
 						),
 						'restart' => array(
-							'/etc/init.d/nscd restart'
+							'/etc/init.d/nscd restart',
+                                                        'nscd --invalidate=group'
 						)
 					),
 					'logrotate' => array(
diff --git a/lib/configfiles/precise.inc.php b/lib/configfiles/precise.inc.php
index ec18eeeb..ef75c368 100644
--- a/lib/configfiles/precise.inc.php
+++ b/lib/configfiles/precise.inc.php
@@ -395,7 +395,8 @@ return array(
 							'etc_nsswitch.conf' => '/etc/nsswitch.conf',
 						),
 						'restart' => array(
-							'/etc/init.d/nscd restart'
+							'/etc/init.d/nscd restart',
+                                                        'nscd --invalidate=group'
 						)
 					),
 					'logrotate' => array(
diff --git a/lib/configfiles/squeeze.inc.php b/lib/configfiles/squeeze.inc.php
index 0c0d2847..32e5b4ce 100644
--- a/lib/configfiles/squeeze.inc.php
+++ b/lib/configfiles/squeeze.inc.php
@@ -392,7 +392,8 @@ return array(
 							'etc_nsswitch.conf' => '/etc/nsswitch.conf',
 						),
 						'restart' => array(
-							'/etc/init.d/nscd restart'
+							'/etc/init.d/nscd restart',
+                                                        'nscd --invalidate=group'
 						)
 					),
 					'logrotate' => array(
diff --git a/lib/configfiles/trusty.inc.php b/lib/configfiles/trusty.inc.php
index df6573e3..18777f6f 100644
--- a/lib/configfiles/trusty.inc.php
+++ b/lib/configfiles/trusty.inc.php
@@ -390,7 +390,8 @@ return array(
 							'etc_nsswitch.conf' => '/etc/nsswitch.conf',
 						),
 						'restart' => array(
-							'service nscd restart'
+							'service nscd restart',
+                                                        'nscd --invalidate=group'
 						)
 					),
 					'logrotate' => array(
diff --git a/lib/configfiles/wheezy.inc.php b/lib/configfiles/wheezy.inc.php
index e1054e11..dba9a65b 100644
--- a/lib/configfiles/wheezy.inc.php
+++ b/lib/configfiles/wheezy.inc.php
@@ -397,7 +397,8 @@ return array(
 							'etc_nsswitch.conf' => '/etc/nsswitch.conf',
 						),
 						'restart' => array(
-							'/etc/init.d/nscd restart'
+							'/etc/init.d/nscd restart',
+                                                        'nscd --invalidate=group'
 						)
 					),
 					'logrotate' => array(