diff --git a/cachefile.php b/cachefile.php
index 8f6be19..2dd07cf 100644
--- a/cachefile.php
+++ b/cachefile.php
@@ -6,6 +6,48 @@ class cachefile
   /** If TRUE : no information is cached */
   public $nocache = false;
 
+  /** Check if there is some garbage to clean */
+  public function garbage ()
+  {
+    try
+    {
+      $this->cachedir ();
+    }
+    catch (Exception $e)
+    {
+      throw new Exception ($e->getMessage(), $e->getCode());
+    }
+
+    $res = $this->read ("CACHE-Garbage");
+    if ($res === false)
+    {
+      $this->write ("CACHE-Garbage", "Let's go, garbage !", 24*60*60);
+      $files = glob ($this->directory."/*", GLOB_NOSORT);
+      foreach ($files as $fileCache)
+      {
+        $datas = file_get_contents ($fileCache);
+        if ($datas === false)
+        {
+          unlink ($fileCache);
+          continue;
+        }
+
+        $datas = unserialize ($datas);
+        if (! isset ($datas["ttl"]) || ! isset ($datas["data"]) ||
+            ! isset ($datas["createTime"]))
+        {
+          unlink ($fileCache);
+          continue;
+        }
+
+        if (($datas["createTime"] + $datas["ttl"]) >= time ())
+        {
+          unlink ($fileCache);
+        }
+      }
+    }
+  }
+
   /** This function check if the cachedir exists and create it if it is not the
       case.
       Check if the cache dir is writable and readable */
@@ -24,7 +66,7 @@ class cachefile
       if (!mkdir ($this->directory))
         throw new Exception (sprintf (_("Can not create cache directory %s"),
                              $this->directory), 500);
-      chmod ($this->directory, 0666);
+      chmod ($this->directory, 0777);
     }
     if (! is_writable ($this->directory))
       throw new Exception (sprintf (_("Cache directory %s is not writable"),