diff --git a/install/dist/lib/fedora.lib.php b/install/dist/lib/fedora.lib.php
index 1f2e8572a1f425afd86aaef73bedea373a03d73b..67c156f170ebd4f5fa4b483f56190866ba864991 100644
--- a/install/dist/lib/fedora.lib.php
+++ b/install/dist/lib/fedora.lib.php
@@ -1056,6 +1056,13 @@ class installer_dist extends installer_base {
 			exec('chown -R ispconfig:ispconfig '.escapeshellarg($install_dir.'/interface/invoices'));
 		}
 		
+		//* Create the ispconfig auth log file and set uid/gid
+		if(!is_file($conf['ispconfig_log_dir'].'/auth.log')) {
+			touch($conf['ispconfig_log_dir'].'/auth.log');
+		}
+		exec('chown ispconfig:ispconfig '. $conf['ispconfig_log_dir'].'/auth.log');
+		exec('chmod 660 '. $conf['ispconfig_log_dir'].'/auth.log');
+		
 		//* Remove Domain module as its functions are available in the client module now
 		if(@is_dir('/usr/local/ispconfig/interface/web/domain')) exec('rm -rf /usr/local/ispconfig/interface/web/domain');
 		
diff --git a/install/dist/lib/gentoo.lib.php b/install/dist/lib/gentoo.lib.php
index b08a05f4b860cf98e8b63b0e1ec00dba72a3a36b..4d4ada8a108fb017cea5b1a5eb5455e82c34c5a8 100644
--- a/install/dist/lib/gentoo.lib.php
+++ b/install/dist/lib/gentoo.lib.php
@@ -1032,6 +1032,13 @@ class installer extends installer_base
 			touch($conf['ispconfig_log_dir'].'/ispconfig.log');
 		}
 		
+		//* Create the ispconfig auth log file and set uid/gid
+		if(!is_file($conf['ispconfig_log_dir'].'/auth.log')) {
+			touch($conf['ispconfig_log_dir'].'/auth.log');
+		}
+		exec('chown ispconfig:ispconfig '. $conf['ispconfig_log_dir'].'/auth.log');
+		exec('chmod 660 '. $conf['ispconfig_log_dir'].'/auth.log');
+		
 		rename($install_dir.'/server/scripts/run-getmail.sh', '/usr/local/bin/run-getmail.sh');
 		
 		if (is_user('getmail')) {
diff --git a/install/dist/lib/opensuse.lib.php b/install/dist/lib/opensuse.lib.php
index f33fc84642f393fc41dbdff8c7a1cd212e9c8f7b..1a8e3c8a0936ded26c4a640be20ec88bb2fa1a3b 100644
--- a/install/dist/lib/opensuse.lib.php
+++ b/install/dist/lib/opensuse.lib.php
@@ -1098,6 +1098,13 @@ class installer_dist extends installer_base {
 			exec('chown -R ispconfig:ispconfig '.escapeshellarg($install_dir.'/interface/invoices'));
 		}
 		
+		//* Create the ispconfig auth log file and set uid/gid
+		if(!is_file($conf['ispconfig_log_dir'].'/auth.log')) {
+			touch($conf['ispconfig_log_dir'].'/auth.log');
+		}
+		exec('chown ispconfig:ispconfig '. $conf['ispconfig_log_dir'].'/auth.log');
+		exec('chmod 660 '. $conf['ispconfig_log_dir'].'/auth.log');
+		
 		//* Remove Domain module as its functions are available in the client module now
 		if(@is_dir('/usr/local/ispconfig/interface/web/domain')) exec('rm -rf /usr/local/ispconfig/interface/web/domain');
 		
diff --git a/install/lib/install.lib.php b/install/lib/install.lib.php
index ea01c2cbc91953b5763054ccadb7ff3b35f0573e..f901264bced2927de4173e4073fd54977011e22f 100644
--- a/install/lib/install.lib.php
+++ b/install/lib/install.lib.php
@@ -723,7 +723,7 @@ function get_ispconfig_port_number() {
 	if(is_file($ispconfig_vhost_file)) {
 		$tmp = file_get_contents($ispconfig_vhost_file);
 		preg_match($regex,$tmp,$matches);
-		$port_number = intval($matches[1]);
+		$port_number = @intval($matches[1]);
 		if($port_number > 0) {
 			return $port_number;
 		} else {
diff --git a/install/lib/installer_base.lib.php b/install/lib/installer_base.lib.php
index 9fec15855916f27cf867c2c9122f79975bc5254d..d11acd1f63defd5dff1f2ce183015d74068b2ec6 100644
--- a/install/lib/installer_base.lib.php
+++ b/install/lib/installer_base.lib.php
@@ -1962,9 +1962,9 @@ class installer_base {
 		//* Create the ispconfig auth log file and set uid/gid
 		if(!is_file($conf['ispconfig_log_dir'].'/auth.log')) {
 			touch($conf['ispconfig_log_dir'].'/auth.log');
-			exec('chown ispconfig:ispconfig '. $conf['ispconfig_log_dir'].'/auth.log');
-			exec('chmod 660 '. $conf['ispconfig_log_dir'].'/auth.log');
 		}
+		exec('chown ispconfig:ispconfig '. $conf['ispconfig_log_dir'].'/auth.log');
+		exec('chmod 660 '. $conf['ispconfig_log_dir'].'/auth.log');
 
 		if(is_user('getmail')) {
 			rename($install_dir.'/server/scripts/run-getmail.sh','/usr/local/bin/run-getmail.sh');