diff --git a/modules/install/install.controller.php b/modules/install/install.controller.php
index cc6548a94..056efd821 100644
--- a/modules/install/install.controller.php
+++ b/modules/install/install.controller.php
@@ -56,6 +56,10 @@
             // 각 필요한 항목 체크
             $checklist = array();
 
+            // 0. php 버전 체크 (5.2.2는 설치 불가)
+            if(phpversion()=='5.2.2') $checklist['php_version'] = false;
+            else $checklist['php_version'] = true;
+
             // 1. permission 체크
             if(is_writable('./')||is_writable('./files')) $checklist['permission'] = true;
             else $checklist['permission'] = false;
@@ -76,7 +80,7 @@
             if(function_exists('imagecreatefromgif')) $checklist['gd'] = true;
             else $checklist['gd'] = false;
 
-            if(!$checklist['permission'] || !$checklist['xml'] || !$checklist['session']) $install_enable = false;
+            if(!$checklist['php_version'] || !$checklist['permission'] || !$checklist['xml'] || !$checklist['session']) $install_enable = false;
             else $install_enable = true;
 
             // 체크 결과를 Context에 저장
diff --git a/modules/install/lang/ko.lang.php b/modules/install/lang/ko.lang.php
index f8215bf52..a2031f591 100644
--- a/modules/install/lang/ko.lang.php
+++ b/modules/install/lang/ko.lang.php
@@ -201,6 +201,7 @@ EndOfLicense;
     $lang->install_condition_title = "필수 설치조건을 확인하세요.";
 
     $lang->install_checklist_title = array(
+            'php_version' => 'PHP Version',
             'permission' => '퍼미션',
             'xml' => 'XML 라이브러리',
             'iconv' => 'ICONV 라이브러리',
@@ -209,6 +210,7 @@ EndOfLicense;
         );
 
     $lang->install_checklist_desc = array(
+            'php_version' => '[필수] PHP버전이 5.2.2일 경우 PHP의 버그로 인하여 설치되지 않습니다',
             'permission' => '[필수] 제로보드의 설치 경로 또는 ./files 디렉토리의 퍼미션이 707이어야 합니다',
             'xml' => '[필수] XML통신을 위하여 XML 라이브러리가 필요합니다',
             'session' => '[필수] 제로보드에서 세션 사용을 위해 php.ini 설정의 session.auto_start=0 이어야 합니다',
diff --git a/modules/install/tpl/form.mysql.html b/modules/install/tpl/form.mysql.html
index 2b7c5635e..50c68aae8 100644
--- a/modules/install/tpl/form.mysql.html
+++ b/modules/install/tpl/form.mysql.html
@@ -15,7 +15,7 @@
     <tr>
         <th rowspan="6" class="hr" scope="row">{$db_type}</th>
         <th class="second" scope="row"><label for="textfield11">{$lang->db_hostname}</label></th>
-        <td><input type="text" name="db_hostname" value="127.0.0.1" class="inputTypeText w100" id="textfield11" /></td>
+        <td><input type="text" name="db_hostname" value="localhost" class="inputTypeText w100" id="textfield11" /></td>
     </tr>
     <tr>
         <th class="second" scope="row"><label for="textfield12">{$lang->db_port}</label></th>
diff --git a/modules/install/tpl/form.mysql_innodb.html b/modules/install/tpl/form.mysql_innodb.html
index 2b7c5635e..50c68aae8 100644
--- a/modules/install/tpl/form.mysql_innodb.html
+++ b/modules/install/tpl/form.mysql_innodb.html
@@ -15,7 +15,7 @@
     <tr>
         <th rowspan="6" class="hr" scope="row">{$db_type}</th>
         <th class="second" scope="row"><label for="textfield11">{$lang->db_hostname}</label></th>
-        <td><input type="text" name="db_hostname" value="127.0.0.1" class="inputTypeText w100" id="textfield11" /></td>
+        <td><input type="text" name="db_hostname" value="localhost" class="inputTypeText w100" id="textfield11" /></td>
     </tr>
     <tr>
         <th class="second" scope="row"><label for="textfield12">{$lang->db_port}</label></th>