diff --git a/README.md b/README.md
index 22539076..34fe3554 100644
--- a/README.md
+++ b/README.md
@@ -21,11 +21,11 @@ it need one.
 
 Contributing
 ------------
-* Use GitHub to submit a pull request.
-* Send feedbacks
-* Fix bugs or add features
-* Write/Edit the Wiki
-If you need help developing a patch, join our IRC channel.
+You can contribute to Tinyboard by:
+*	Developing patches/improvements/translations and using GitHub to submit pull requests
+*	Providing feedback and suggestions
+*	Writing/editing documentation
+If you need help developing a patch, please join our IRC channel.
 
 Installation
 -------------
diff --git a/install.php b/install.php
index 1e872911..d580e97d 100644
--- a/install.php
+++ b/install.php
@@ -1,7 +1,7 @@
 <?php
 
 // Installation/upgrade file	
-define('VERSION', 'v0.9.6-dev-5');
+define('VERSION', 'v0.9.6-dev-6');
 
 require 'inc/functions.php';
 
@@ -212,6 +212,16 @@ if (file_exists($config['has_installed'])) {
 			query("ALTER TABLE  `antispam` CHANGE  `hash`  `hash` CHAR( 40 ) NOT NULL") or error(db_error());
 		case 'v0.9.6-dev-4':
 			query("ALTER TABLE  `news` DROP INDEX  `id`, ADD PRIMARY KEY ( `id` )") or error(db_error());
+		case 'v0.9.6-dev-5':
+			query("ALTER TABLE  `bans` CHANGE  `id`  `id` INT( 11 ) UNSIGNED NOT NULL AUTO_INCREMENT") or error(db_error());
+			query("ALTER TABLE  `mods` CHANGE  `id`  `id` INT( 11 ) UNSIGNED NOT NULL AUTO_INCREMENT") or error(db_error());
+			query("ALTER TABLE  `news` CHANGE  `id`  `id` INT( 11 ) UNSIGNED NOT NULL AUTO_INCREMENT") or error(db_error());
+			query("ALTER TABLE  `noticeboard` CHANGE  `id`  `id` INT( 11 ) UNSIGNED NOT NULL AUTO_INCREMENT") or error(db_error());
+			query("ALTER TABLE  `pms` CHANGE  `id`  `id` INT( 11 ) UNSIGNED NOT NULL AUTO_INCREMENT") or error(db_error());
+			query("ALTER TABLE  `reports` CHANGE  `id`  `id` INT( 11 ) UNSIGNED NOT NULL AUTO_INCREMENT") or error(db_error());
+			foreach ($boards as $board) {
+				query(sprintf("ALTER TABLE  `posts_%s` CHANGE `id`  `id` INT( 11 ) UNSIGNED NOT NULL AUTO_INCREMENT", $board['uri'])) or error(db_error());
+			}
 		case false:
 			// Update version number
 			file_write($config['has_installed'], VERSION);
diff --git a/install.sql b/install.sql
index b0bee8c8..811811e2 100644
--- a/install.sql
+++ b/install.sql
@@ -44,7 +44,7 @@ CREATE TABLE IF NOT EXISTS `antispam` (
 --
 
 CREATE TABLE IF NOT EXISTS `bans` (
-  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
+  `id` int(11) UNSIGNED NOT NULL AUTO_INCREMENT,
   `ip` varchar(45) NOT NULL,
   `mod` int(11) NOT NULL COMMENT 'which mod made the ban',
   `set` int(11) NOT NULL,
@@ -97,7 +97,7 @@ CREATE TABLE IF NOT EXISTS `cites` (
 --
 
 CREATE TABLE IF NOT EXISTS `ip_notes` (
-  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
+  `id` int(11) UNSIGNED NOT NULL AUTO_INCREMENT,
   `ip` varchar(45) NOT NULL,
   `mod` int(11) DEFAULT NULL,
   `time` int(11) NOT NULL,
@@ -128,7 +128,7 @@ CREATE TABLE IF NOT EXISTS `modlogs` (
 --
 
 CREATE TABLE IF NOT EXISTS `mods` (
-  `id` smallint(6) unsigned NOT NULL AUTO_INCREMENT,
+  `id` smallint(6) UNSIGNED NOT NULL AUTO_INCREMENT,
   `username` varchar(30) NOT NULL,
   `password` char(40) NOT NULL COMMENT 'SHA1',
   `type` smallint(1) NOT NULL COMMENT '0: janitor, 1: mod, 2: admin',
@@ -163,7 +163,7 @@ CREATE TABLE IF NOT EXISTS `mutes` (
 --
 
 CREATE TABLE IF NOT EXISTS `news` (
-  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
+  `id` int(11) UNSIGNED NOT NULL AUTO_INCREMENT,
   `name` text NOT NULL,
   `time` int(11) NOT NULL,
   `subject` text NOT NULL,
@@ -179,7 +179,7 @@ CREATE TABLE IF NOT EXISTS `news` (
 --
 
 CREATE TABLE IF NOT EXISTS `noticeboard` (
-  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
+  `id` int(11) UNSIGNED NOT NULL AUTO_INCREMENT,
   `mod` int(11) NOT NULL,
   `time` int(11) NOT NULL,
   `subject` text NOT NULL,
@@ -194,7 +194,7 @@ CREATE TABLE IF NOT EXISTS `noticeboard` (
 --
 
 CREATE TABLE IF NOT EXISTS `pms` (
-  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
+  `id` int(11) UNSIGNED NOT NULL AUTO_INCREMENT,
   `sender` int(11) NOT NULL,
   `to` int(11) NOT NULL,
   `message` text NOT NULL,
@@ -210,7 +210,7 @@ CREATE TABLE IF NOT EXISTS `pms` (
 --
 
 CREATE TABLE IF NOT EXISTS `reports` (
-  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
+  `id` int(11) UNSIGNED NOT NULL AUTO_INCREMENT,
   `time` int(11) NOT NULL,
   `ip` varchar(45) NOT NULL,
   `board` varchar(120) DEFAULT NULL,
diff --git a/templates/posts.sql b/templates/posts.sql
index ef8d403e..d10749f8 100644
--- a/templates/posts.sql
+++ b/templates/posts.sql
@@ -1,5 +1,5 @@
 CREATE TABLE IF NOT EXISTS `posts_{{ board }}` (
-  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `id` int(11) UNSIGNED NOT NULL AUTO_INCREMENT,
   `thread` int(11) DEFAULT NULL,
   `subject` varchar(100) DEFAULT NULL,
   `email` varchar(30) DEFAULT NULL,