diff --git a/phpBB/install/schemas/mysql_schema.sql b/phpBB/install/schemas/mysql_schema.sql
index 03a63b73e0..305676fbbe 100644
--- a/phpBB/install/schemas/mysql_schema.sql
+++ b/phpBB/install/schemas/mysql_schema.sql
@@ -163,7 +163,6 @@ CREATE TABLE phpbb_extensions (
   extension_id mediumint(8) UNSIGNED NOT NULL auto_increment,
   group_id mediumint(8) UNSIGNED DEFAULT '0' NOT NULL,
   extension varchar(100) DEFAULT '' NOT NULL,
-  comment varchar(100) DEFAULT '' NOT NULL,
   PRIMARY KEY (extension_id)
 );
 
@@ -369,8 +368,8 @@ CREATE TABLE phpbb_posts (
    post_encoding varchar(11) DEFAULT 'iso-8859-15' NOT NULL,
    post_attachment tinyint(1) DEFAULT '0' NOT NULL,
    bbcode_bitfield int(11) UNSIGNED DEFAULT '0' NOT NULL,
-   bbcode_uid varchar(5) NOT NULL,
-   post_edit_time int(11),
+   bbcode_uid varchar(5) DEFAULT '' NOT NULL,
+   post_edit_time int(11) UNSIGNED DEFAULT '0' NOT NULL,
    post_edit_count smallint(5) UNSIGNED DEFAULT '0' NOT NULL,
    post_edit_locked tinyint(1) UNSIGNED DEFAULT '0' NOT NULL,
    PRIMARY KEY (post_id),
@@ -641,9 +640,11 @@ CREATE TABLE phpbb_topics (
    topic_last_post_id mediumint(8) UNSIGNED DEFAULT '0' NOT NULL,
    topic_last_poster_id mediumint(8) UNSIGNED DEFAULT '0' NOT NULL,
    topic_last_poster_name varchar(30),
-   topic_last_post_time int(11) DEFAULT '0' NOT NULL,
-   topic_last_view_time int(11) DEFAULT '0' NOT NULL,
+   topic_last_post_time int(11) UNSIGNED DEFAULT '0' NOT NULL,
+   topic_last_view_time int(11) UNSIGNED DEFAULT '0' NOT NULL,
    topic_moved_id mediumint(8) UNSIGNED DEFAULT '0' NOT NULL,
+   topic_bumped tinyint(1) UNSIGNED DEFAULT '0' NOT NULL,
+   topic_bumper mediumint(8) UNSIGNED DEFAULT '0' NOT NULL,
    poll_title varchar(255) NOT NULL,
    poll_start int(11) DEFAULT '0' NOT NULL,
    poll_length int(11) DEFAULT '0' NOT NULL,
diff --git a/phpBB/install/schemas/schema_data.sql b/phpBB/install/schemas/schema_data.sql
index c8cb5469f6..844ffcf2bd 100644
--- a/phpBB/install/schemas/schema_data.sql
+++ b/phpBB/install/schemas/schema_data.sql
@@ -550,32 +550,33 @@ INSERT INTO phpbb_extension_groups (group_id, group_name, cat_id, allow_group, d
 # MSSQL IDENTITY phpbb_extensions ON #
 
 # -- extensions
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (1, 1, 'gif', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (2, 1, 'png', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (3, 1, 'jpeg', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (4, 1, 'jpg', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (5, 1, 'tif', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (6, 1, 'tga', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (7, 2, 'gtar', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (8, 2, 'gz', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (9, 2, 'tar', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (10, 2, 'zip', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (11, 2, 'rar', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (12, 2, 'ace', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (13, 3, 'txt', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (14, 3, 'c', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (15, 3, 'h', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (16, 3, 'cpp', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (17, 3, 'hpp', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (18, 3, 'diz', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (19, 4, 'xls', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (20, 4, 'doc', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (21, 4, 'dot', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (22, 4, 'pdf', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (23, 4, 'ai', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (24, 4, 'ps', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (25, 4, 'ppt', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (26, 5, 'rm', '');
-INSERT INTO phpbb_extensions (extension_id, group_id, extension, comment) VALUES (27, 6, 'wma', '');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (1, 1, 'gif');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (2, 1, 'png');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (3, 1, 'jpeg');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (4, 1, 'jpg');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (5, 1, 'tif');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (6, 1, 'tga');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (7, 2, 'gtar');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (8, 2, 'gz');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (9, 2, 'tar');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (10, 2, 'zip');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (11, 2, 'rar');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (12, 2, 'ace');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (13, 3, 'txt');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (14, 3, 'c');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (15, 3, 'h');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (16, 3, 'cpp');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (17, 3, 'hpp');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (18, 3, 'diz');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (19, 4, 'xls');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (20, 4, 'doc');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (21, 4, 'dot');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (22, 4, 'pdf');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (23, 4, 'ai');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (24, 4, 'ps');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (25, 4, 'ppt');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (26, 5, 'rm');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (27, 6, 'wma');
+INSERT INTO phpbb_extensions (extension_id, group_id, extension) VALUES (28, 6, 'wmv');
 
 # MSSQL IDENTITY phpbb_extensions OFF #