diff --git a/inc/config.php b/inc/config.php
index 800996c5..7fa9da2d 100644
--- a/inc/config.php
+++ b/inc/config.php
@@ -26,8 +26,12 @@
 		'custom_capcode' => Array(),
 		'dnsbl' => Array()
 	);
-	// Database stuff
+	// Database stuff	
 	
+	// Automatically check if a newer version of Tinyboard is available when an administrator logs in
+	$config['check_updates'] = true;
+	// How often to check for updates
+	$config['check_updates_time'] = 43200; // 12 hours
 	
 	// SQL driver ("mysql", "pgsql", "sqlite", "dblib", etc)
 	// http://www.php.net/manual/en/pdo.drivers.php
@@ -46,6 +50,9 @@
 	// Timeout duration in seconds (not all drivers support this)
 	$config['db']['timeout'] = 5;
 	
+	// Shows some extra information at the bottom of pages. Good for debugging development.
+	// Also experimental.
+	$config['debug'] = false;
 	
 	// Optional Memcached server for more cache/optimization (currently at debug state)
 	$config['memcached']['enabled'] = false;
diff --git a/inc/display.php b/inc/display.php
index 965356da..38ab67a6 100644
--- a/inc/display.php
+++ b/inc/display.php
@@ -342,9 +342,9 @@
 					$built .= ', ' . $this->filename . ')</span></p>' .
 					
 				// Thumbnail
-					'<a href="' . $config['uri_img'] . $this->file.'"><img src="' . $config['uri_thumb'] . $this->thumb.'" style="width:'.$this->thumbx.'px;height:'.$this->thumby.'px;" /></a>';
+					'<a href="' . $config['uri_img'] . $this->file.'"><img src="' . $config['uri_thumb'] . $this->thumb.'" style="width:'.$this->thumbx.'px;height:'.$this->thumby.'px;" alt="" /></a>';
 				} elseif($this->file == 'deleted') {
-					$built .= '<img src="' . $config['image_deleted'] . '" />';
+					$built .= '<img src="' . $config['image_deleted'] . '" alt="" />';
 			}
 			
 			$built .= $this->postControls();
@@ -485,7 +485,7 @@
 				// Filename
 					$built .= ', ' . $this->filename . ')</span></p>' . 
 				// Thumbnail
-					'<a href="' . $config['uri_img'] . $this->file.'"><img src="' . $config['uri_thumb'] . $this->thumb.'" style="width:'.$this->thumbx.'px;height:'.$this->thumby.'px;" /></a>';
+					'<a href="' . $config['uri_img'] . $this->file.'"><img src="' . $config['uri_thumb'] . $this->thumb.'" style="width:'.$this->thumbx.'px;height:'.$this->thumby.'px;" alt="" /></a>';
 			}
 			
 			$built .= '<div class="post op"><p class="intro"' . (!$index?' id="' . $this->id . '"':'') . '>';
@@ -531,9 +531,9 @@
 			// JavaScript cite
 			'<a class="post_no"' . ($index?'':' onclick="citeReply(' . $this->id . ');"') . ' href="' . ($index ? $this->link('q') : 'javascript:void(0);') . '">'.$this->id.'</a>' .
 			// Sticky
-			($this->sticky ? '<img class="icon" title="Sticky" src="' . $config['image_sticky'] . '" />' : '') .
+			($this->sticky ? '<img class="icon" title="Sticky" src="' . $config['image_sticky'] . '" alt="Sticky" />' : '') .
 			// Locked
-			($this->locked ? '<img class="icon" title="Locked" src="' . $config['image_locked'] . '" />' : '') .
+			($this->locked ? '<img class="icon" title="Locked" src="' . $config['image_locked'] . '" alt="Locked" />' : '') .
 			// [Reply]
 			($index ? '<a href="' . $this->root . $board['dir'] . $config['dir']['res'] . sprintf($config['file_page'], $this->id) . '">[Reply]</a>' : '') .
 			
diff --git a/inc/functions.php b/inc/functions.php
index d3be5d1c..20118599 100644
--- a/inc/functions.php
+++ b/inc/functions.php
@@ -9,7 +9,7 @@
 	loadConfig();
 	
 	function loadConfig() {
-		global $board, $config, $__ip;
+		global $board, $config, $__ip, $debug;
 		
 		require 'config.php';
 		if (file_exists('inc/instance-config.php')) {
@@ -19,6 +19,12 @@
 			require $board['dir'] . '/config.php';
 		}
 		
+		if($config['debug']) {
+			if(!isset($debug))
+				$debug = Array('sql');
+			$debug['start'] = time();
+		}
+		
 		if(!isset($config['url_stylesheet']))
 			$config['url_stylesheet'] = $config['root'] . 'style.css';
 		if(!isset($config['url_javascript']))
diff --git a/mod.php b/mod.php
index ce486525..4b62a434 100644
--- a/mod.php
+++ b/mod.php
@@ -82,6 +82,7 @@
 				'Administration' => '',
 				'Themes' => '',
 				'Search' => '',
+				'Update' => '',
 				'Logout' => ''
 			);
 			
@@ -155,6 +156,9 @@
 			if($mod['type'] >= $config['mod']['rebuild']) {
 				$fieldset['Administration'] .= 	'<li><a href="?/rebuild">Rebuild static files</a></li>';
 			}
+			if($mod['type'] >= $config['mod']['rebuild'] && $config['memcached']['enabled']) {
+				$fieldset['Administration'] .= 	'<li><a href="?/flush">Clear cache</a></li>';
+			}
 			if($mod['type'] >= $config['mod']['show_config']) {
 				$fieldset['Administration'] .= 	'<li><a href="?/config">Show configuration</a></li>';
 			}
@@ -173,6 +177,56 @@
 				'</li>';
 			}
 			
+			if($mod['type'] >= ADMIN && $config['check_updates']) {
+				if(!$version = @file_get_contents('.installed'))
+					error('Could not find current version! (Check .installed)');
+				if(isset($_SESSION['update']) && time() - $_SESSION['update']['time'] < $config['check_updates_time']) {
+					$latest = $_SESSION['update']['latest'];
+				} else {
+					$ctx = stream_context_create(array( 
+						'http' => array(
+							'timeout' => 3
+							) 
+						) 
+					);
+					$latest = @file_get_contents('http://tinyboard.org/latest.txt', 0, $ctx);
+					if(preg_match('/^v(\d+)\.(\d)\.(\d+)$/', $latest, $m)) {
+						$newer = Array(
+							'massive' => (int)$m[1],
+							'major' => (int)$m[2],
+							'minor' => (int)$m[3]
+						);
+						if(preg_match('/v(\d+)\.(\d)\.(\d+)(-dev.+)?$/', $version, $m)) {
+							$current = Array(
+								'massive' => (int)$m[1],
+								'major' => (int)$m[2],
+								'minor' => (int)$m[3]
+							);
+							if(isset($m[4])) { 
+								// Development versions are always ahead in the versioning numbers
+								$current['minor'] --;
+							}
+						}
+						// Check if it's newer
+						if(	$newer['massive'] > $current['massive'] ||
+							$newer['major'] > $current['major'] ||
+								($newer['massive'] == $current['massive'] &&
+									$newer['major'] == $current['major'] &&
+									$newer['minor'] > $current['minor']
+								)) {
+							$latest = $latest;
+						} else $latest = false;
+					} else $latest = false;
+					
+					$_SESSION['update'] = Array('time' => time(), 'latest' => $latest);
+				}
+				
+				if($latest) {
+					$latest = trim($latest);
+					$fieldset['Update'] .= '<li>A newer version of Tinyboard (<strong>' . $latest . '</strong>) is available! See <a href="http://tinyboard.org">http://tinyboard.org/</a> for download instructions.</li>';
+				}
+			}
+			
 			$fieldset['Logout'] .= '<li><a href="?/logout">Logout</a></li>';
 			
 			// TODO: Statistics, etc, in the dashboard.
@@ -1374,6 +1428,23 @@
 				'mod'=>true
 			)
 		);
+		} elseif(preg_match('/^\/flush$/', $query)) {
+			if($mod['type'] < $config['mod']['rebuild']) error($config['error']['noaccess']);
+			if(!$config['memcached']['enabled']) error('Memcached is not enabled.');
+			
+			if($memcached->flush()) {
+				$body = 'Successfully invalidated all items in the cache.';
+				modLog('Cleared cache');
+			} else {
+				$body = $memcached->getResultMessage();
+			}
+			
+			echo Element('page.html', Array(
+				'config'=>$config,
+				'title'=>'Flushed',
+				'body'=>'<p style="text-align:center">' . $body . '</p>',
+				'mod'=>true
+			));
 		} elseif(preg_match('/^\/rebuild$/', $query)) {
 			if($mod['type'] < $config['mod']['rebuild']) error($config['error']['noaccess']);