diff --git a/wp-admin/admin-functions.php b/wp-admin/admin-functions.php
index 0982874712..1291898308 100644
--- a/wp-admin/admin-functions.php
+++ b/wp-admin/admin-functions.php
@@ -736,7 +736,7 @@ function user_row( $user_object, $style = '' ) {
 		<td><label for='user_{$user_object->ID}'>$user_object->first_name $user_object->last_name</label></td>
 		<td><a href='mailto:$email' title='" . sprintf(__('e-mail: %s'), $email) . "'>$email</a></td>
 		<td><a href='$url' title='website: $url'>$short_url</a></td>";
-	$r .= "\n\t\t<td align='right'>$numposts</td>";
+	$r .= "\n\t\t<td align='center'>$numposts</td>";
 	$r .= "\n\t\t<td>";
 	if (current_user_can('edit_users'))
 		$r .= "<a href='user-edit.php?user_id=$user_object->ID' class='edit'>".__('Edit')."</a>";
@@ -1559,8 +1559,8 @@ function get_file_description($file) {
 	if (isset ($wp_file_descriptions[basename($file)])) {
 		return $wp_file_descriptions[basename($file)];
 	}
-	elseif (file_exists(ABSPATH.$file)) {
-		$template_data = implode('', file(ABSPATH.$file));
+	elseif ( file_exists( ABSPATH . $file ) && is_file( ABSPATH . $file ) ) {
+		$template_data = implode('', file( ABSPATH . $file ));
 		if (preg_match("|Template Name:(.*)|i", $template_data, $name))
 			return $name[1];
 	}
@@ -1911,21 +1911,14 @@ function wp_import_cleanup($id) {
 
 function wp_import_upload_form($action) {
 ?>
-<script type="text/javascript">
-function cancelUpload() {
-o = document.getElementById('uploadForm');
-o.method = 'GET';
-o.action.value = 'view';
-o.submit();
-}
-</script>
-<form enctype="multipart/form-data" id="uploadForm" method="POST" action="<?php echo $action ?>">
-<label for="upload"><?php _e('File:'); ?></label><input type="file" id="upload" name="import" />
+<form enctype="multipart/form-data" id="import-upload-form" method="POST" action="<?php echo $action ?>">
+<p>
+<label for="upload"><?php _e('Choose a file from your computer:'); ?></label> <input type="file" id="upload" name="import" size="25" />
 <input type="hidden" name="action" value="save" />
-<div id="buttons">
-<input type="submit" value="<?php _e('Import'); ?>" />
-<input type="button" value="<?php _e('Cancel'); ?>" onclick="cancelUpload()" />
-</div>
+</p>
+<p class="submit">
+<input type="submit" value="<?php _e('Upload file and import'); ?> &raquo;" />
+</p>
 </form>
 <?php
 }
@@ -1938,7 +1931,7 @@ function wp_import_handle_upload() {
 		return $file;
 
 	$url = $file['url'];
-	$file = $file['file'];
+	$file = addslashes( $file['file'] );
 	$filename = basename($file);
 
 	// Construct the object array
diff --git a/wp-admin/categories.php b/wp-admin/categories.php
index 0305d53e39..6e32353d16 100644
--- a/wp-admin/categories.php
+++ b/wp-admin/categories.php
@@ -130,12 +130,12 @@ $messages[3] = __('Category updated.');
 <?php else : ?>
 	<h2><?php _e('Categories') ?> </h2>
 <?php endif; ?>
-<table width="100%" cellpadding="3" cellspacing="3">
+<table class="widefat">
 	<thead>
 	<tr>
 		<th scope="col"><?php _e('ID') ?></th>
-        <th scope="col"><?php _e('Name') ?></th>
-        <th scope="col"><?php _e('Description') ?></th>
+        <th scope="col" style="text-align: left"><?php _e('Name') ?></th>
+        <th scope="col" style="text-align: left"><?php _e('Description') ?></th>
         <th scope="col" width="90"><?php _e('Posts') ?></th>
         <th scope="col" width="90"><?php _e('Bookmarks') ?></th>
         <th colspan="2"><?php _e('Action') ?></th>
diff --git a/wp-admin/edit-comments.php b/wp-admin/edit-comments.php
index 57fb693ff8..6e36c66402 100644
--- a/wp-admin/edit-comments.php
+++ b/wp-admin/edit-comments.php
@@ -39,7 +39,7 @@ function getNumChecked(form)
 </script>
 <div class="wrap">
 <h2><?php _e('Comments'); ?></h2>
-<form name="searchform" action="" method="get"> 
+<form name="searchform" action="" method="get" id="editcomments"> 
   <fieldset> 
   <legend><?php _e('Show Comments That Contain...') ?></legend> 
   <input type="text" name="s" value="<?php if (isset($_GET['s'])) echo wp_specialchars($_GET['s'], 1); ?>" size="17" /> 
@@ -152,15 +152,17 @@ $post_title = ('' == $post_title) ? "# $comment->comment_post_ID" : $post_title;
 	if ($comments) {
 		echo '<form name="deletecomments" id="deletecomments" action="" method="post"> ';
 		wp_nonce_field('bulk-comments');
-		echo '<table width="100%" cellpadding="3" cellspacing="3">
+		echo '<table class="widefat">
+<thead>
   <tr>
-    <th scope="col">*</th>
-    <th scope="col">' .  __('Name') . '</th>
-    <th scope="col">' .  __('E-mail') . '</th>
-    <th scope="col">' . __('IP') . '</th>
-    <th scope="col">' . __('Comment Excerpt') . '</th>
+    <th scope="col"><input type="checkbox" onclick="checkAll(document.getElementById(\'deletecomments\'));" /></th>
+    <th scope="col" style="text-align: left">' .  __('Name') . '</th>
+    <th scope="col" style="text-align: left">' .  __('E-mail') . '</th>
+    <th scope="col" style="text-align: left">' . __('IP') . '</th>
+    <th scope="col" style="text-align: left">' . __('Comment Excerpt') . '</th>
 	<th scope="col" colspan="3">' .  __('Actions') . '</th>
-  </tr>';
+  </tr>
+</thead>';
 		foreach ($comments as $comment) {
 		$authordata = get_userdata($wpdb->get_var("SELECT post_author FROM $wpdb->posts WHERE ID = $comment->comment_post_ID"));
 		$comment_status = wp_get_comment_status($comment->comment_ID);
@@ -183,14 +185,13 @@ $post_title = ('' == $post_title) ? "# $comment->comment_post_ID" : $post_title;
     <td><?php if ( current_user_can('edit_post', $comment->comment_post_ID) ) {
 	echo "<a href='comment.php?action=editcomment&amp;comment=$comment->comment_ID' class='edit'>" .  __('Edit') . "</a>"; } ?></td>
     <td><?php if ( current_user_can('edit_post', $comment->comment_post_ID) ) {
-		echo "<a href=\"comment.php?action=deletecomment&amp;p=".$comment->comment_post_ID."&amp;comment=".$comment->comment_ID."\" onclick=\"return deleteSomething( 'comment', $comment->comment_ID, '" . sprintf(__("You are about to delete this comment by &quot;%s&quot;.\\n&quot;Cancel&quot; to stop, &quot;OK&quot; to delete."), js_escape( $comment->comment_author ))  . "' );\" class='edit'>" . __('Delete') . "</a> ";
+		echo "<a href=\"comment.php?action=deletecomment&amp;p=".$comment->comment_post_ID."&amp;comment=".$comment->comment_ID."\" onclick=\"return deleteSomething( 'comment', $comment->comment_ID, '" . sprintf(__("You are about to delete this comment by &quot;%s&quot;.\\n&quot;Cancel&quot; to stop, &quot;OK&quot; to delete."), js_escape( $comment->comment_author ))  . "' );\" class='delete'>" . __('Delete') . "</a> ";
 		} ?></td>
   </tr>
 		<?php 
 		} // end foreach
 	?></table>
-    <p><a href="javascript:;" onclick="checkAll(document.getElementById('deletecomments')); return false; "><?php _e('Invert Checkbox Selection') ?></a></p>
-            <p class="submit"><input type="submit" name="delete_button" value="<?php _e('Delete Checked Comments &raquo;') ?>" onclick="var numchecked = getNumChecked(document.getElementById('deletecomments')); if(numchecked < 1) { alert('<?php _e("Please select some comments to delete"); ?>'); return false } return confirm('<?php printf(__("You are about to delete %s comments permanently \\n  \'Cancel\' to stop, \'OK\' to delete."), "' + numchecked + '"); ?>')" />
+<p class="submit"><input type="submit" name="delete_button" value="<?php _e('Delete Checked Comments &raquo;') ?>" onclick="var numchecked = getNumChecked(document.getElementById('deletecomments')); if(numchecked < 1) { alert('<?php _e("Please select some comments to delete"); ?>'); return false } return confirm('<?php printf(__("You are about to delete %s comments permanently \\n  \'Cancel\' to stop, \'OK\' to delete."), "' + numchecked + '"); ?>')" />
 			<input type="submit" name="spam_button" value="<?php _e('Mark Checked Comments as Spam &raquo;') ?>" onclick="return confirm('<?php _e("You are about to mark these comments as spam \\n  \'Cancel\' to stop, \'OK\' to mark as spam.") ?>')" /></p>
   </form>
 <div id="ajax-response"></div>
diff --git a/wp-admin/edit-pages.php b/wp-admin/edit-pages.php
index 005966cf3c..6be18488eb 100644
--- a/wp-admin/edit-pages.php
+++ b/wp-admin/edit-pages.php
@@ -28,16 +28,14 @@ else
 
 if ($posts) {
 ?>
-<table width="100%" cellpadding="3" cellspacing="3"> 
+<table class="widefat"> 
   <thead>
   <tr>
     <th scope="col"><?php _e('ID') ?></th>
-    <th scope="col"><?php _e('Title') ?></th>
-    <th scope="col"><?php _e('Owner') ?></th>
-	<th scope="col"><?php _e('Updated') ?></th>
-	<th scope="col"></th>
-    <th scope="col"></th>
-    <th scope="col"></th>
+    <th scope="col" style="text-align: left"><?php _e('Title') ?></th>
+    <th scope="col" style="text-align: left"><?php _e('Owner') ?></th>
+	<th scope="col" style="text-align: left"><?php _e('Updated') ?></th>
+	<th scope="col" colspan="3"><?php _e('Action'); ?></th>
   </tr>
   </thead>
   <tbody id="the-list">
diff --git a/wp-admin/edit.php b/wp-admin/edit.php
index d9904bf908..c6b2604b51 100644
--- a/wp-admin/edit.php
+++ b/wp-admin/edit.php
@@ -133,7 +133,7 @@ $posts_columns['control_delete'] = '';
 
 ?>
 
-<table width="100%" cellpadding="3" cellspacing="3"> 
+<table class="widefat"> 
 	<thead>
 	<tr>
 
@@ -185,7 +185,7 @@ foreach($posts_columns as $column_name=>$column_display_name) {
 
 	case 'comments':
 		?>
-		<td><a href="edit.php?p=<?php echo $id ?>&amp;c=1"> 
+		<td style="text-align: center"><a href="edit.php?p=<?php echo $id ?>&amp;c=1"> 
       <?php comments_number(__('0'), __('1'), __('%')) ?> 
       </a></td>
 		<?php
diff --git a/wp-admin/link-manager.php b/wp-admin/link-manager.php
index 43b328766d..c1c5c6dda4 100644
--- a/wp-admin/link-manager.php
+++ b/wp-admin/link-manager.php
@@ -115,12 +115,12 @@ bookmarks ordered by
 <input type="hidden" name="action" value="" />
 <input type="hidden" name="order_by" value="<?php echo wp_specialchars($order_by, 1); ?>" />
 <input type="hidden" name="cat_id" value="<?php echo (int) $cat_id ?>" />
-<table width="100%" cellpadding="3" cellspacing="3">
+<table class="widefat">
 	<thead>
 	<tr>
-		<th width="15%"><?php _e('Name') ?></th>
-		<th><?php _e('URI') ?></th>
-		<th><?php _e('Categories') ?></th>
+		<th width="15%" style="text-align: left"><?php _e('Name') ?></th>
+		<th style="text-align: left"><?php _e('URI') ?></th>
+		<th style="text-align: left"><?php _e('Categories') ?></th>
 		<th><?php _e('rel') ?></th>
 		<th><?php _e('Visible') ?></th>
 		<th colspan="2"><?php _e('Action') ?></th>
diff --git a/wp-admin/plugins.php b/wp-admin/plugins.php
index 84dabf2e81..d6edc421cd 100644
--- a/wp-admin/plugins.php
+++ b/wp-admin/plugins.php
@@ -78,13 +78,15 @@ if (empty($plugins)) {
 	echo '</p>';
 } else {
 ?>
-<table width="100%" cellpadding="3" cellspacing="3">
+<table class="widefat">
+	<thead>
 	<tr>
-		<th><?php _e('Plugin'); ?></th>
+		<th style="text-align: left"><?php _e('Plugin'); ?></th>
 		<th><?php _e('Version'); ?></th>
-		<th><?php _e('Description'); ?></th>
+		<th style="text-align: left"><?php _e('Description'); ?></th>
 		<th><?php _e('Action'); ?></th>
 	</tr>
+	</thead>
 <?php
 	$style = '';
 
diff --git a/wp-admin/users.php b/wp-admin/users.php
index cb5959652a..c61d153975 100644
--- a/wp-admin/users.php
+++ b/wp-admin/users.php
@@ -209,38 +209,40 @@ default:
 <?php wp_nonce_field('bulk-users') ?>
 <div class="wrap">
 	<h2><?php _e('User List by Role'); ?></h2>
-  <table cellpadding="3" cellspacing="3" width="100%">
-	<?php
-	foreach($roleclasses as $role => $roleclass) {
-		ksort($roleclass);
-		?>
-
-	<tr>
-		<th colspan="8" align="left"><h3><?php echo $wp_roles->role_names[$role]; ?></h3></th>
-	</tr>
-	<tr>
-		<th><?php _e('ID') ?></th>
-		<th><?php _e('Username') ?></th>
-		<th><?php _e('Name') ?></th>
-		<th><?php _e('E-mail') ?></th>
-		<th><?php _e('Website') ?></th>
-		<th><?php _e('Posts') ?></th>
-		<th>&nbsp;</th>
-	</tr>
-	<tbody id="role-<?php echo $role; ?>"><?php
-	$style = '';
-	foreach ($roleclass as $user_object) {
-		$style = (' class="alternate"' == $style) ? '' : ' class="alternate"';
-		echo "\n\t" . user_row( $user_object, $style );
-	}
-
-	?>
-
-	</tbody>
+<table class="widefat">
 <?php
-	}
+foreach($roleclasses as $role => $roleclass) {
+	ksort($roleclass);
 ?>
-  </table>
+
+<tr>
+	<th colspan="8" align="left"><h3><?php echo $wp_roles->role_names[$role]; ?></h3></th>
+</tr>
+<thead>
+<tr>
+	<th style="text-align: left"><?php _e('ID') ?></th>
+	<th style="text-align: left"><?php _e('Username') ?></th>
+	<th style="text-align: left"><?php _e('Name') ?></th>
+	<th style="text-align: left"><?php _e('E-mail') ?></th>
+	<th style="text-align: left"><?php _e('Website') ?></th>
+	<th><?php _e('Posts') ?></th>
+	<th>&nbsp;</th>
+</tr>
+</thead>
+<tbody id="role-<?php echo $role; ?>"><?php
+$style = '';
+foreach ($roleclass as $user_object) {
+	$style = (' class="alternate"' == $style) ? '' : ' class="alternate"';
+	echo "\n\t" . user_row( $user_object, $style );
+}
+
+?>
+
+</tbody>
+<?php
+}
+?>
+</table>
 
 
 	<h2><?php _e('Update Users'); ?></h2>
diff --git a/wp-admin/wp-admin.css b/wp-admin/wp-admin.css
index 2b8058e310..7b27c63a59 100644
--- a/wp-admin/wp-admin.css
+++ b/wp-admin/wp-admin.css
@@ -40,6 +40,28 @@ a.delete:hover {
 	overflow: hidden;
 }
 
+.widefat {
+	width: 100%;
+}
+
+.widefat td, .widefat th {
+	padding: 5px 6px;
+}
+
+.import-system {
+	font-size: 16px;
+}
+
+thead {
+	background: #dfdfdf
+}
+
+#import-upload-form {
+	width: 300px;
+	margin: auto;
+	text-align: center;
+}
+
 a.edit, a.delete, a.edit:hover, a.delete:hover {
 	border-bottom: none;
 	display: block;
@@ -366,7 +388,7 @@ form#upload #post_content {
 	clear: both;
 }
 
-table .vers, table .name {
+table .vers {
 	text-align: center;
 }
 
diff --git a/wp-includes/functions-post.php b/wp-includes/functions-post.php
index e684051076..e56dec42b2 100644
--- a/wp-includes/functions-post.php
+++ b/wp-includes/functions-post.php
@@ -348,7 +348,7 @@ function wp_insert_attachment($object, $file = false, $post_parent = 0) {
 	wp_set_post_cats('', $post_ID, $post_category);
 
 	if ( $file )
-		add_post_meta($post_ID, '_wp_attached_file', $file);
+		add_post_meta($post_ID, '_wp_attached_file', $file );
 
 	clean_post_cache($post_ID);