diff --git a/generators/generator.py b/generators/generator.py
index 574efa3..2a70bf7 100644
--- a/generators/generator.py
+++ b/generators/generator.py
@@ -14,7 +14,6 @@ class StrictUTF8Writer(codecs.StreamWriter):
 
     def __init__(self):
         self.value = u''
-        pass
 
     def write(self, object):
         object = object.replace('&lt;', '<')
@@ -41,9 +40,10 @@ class DynastieGenerator:
     report = ''
     somethingWrote = False
 
-    def __init__(self):
+    def __init__(self, hash_posts=None):
         self.report = ''
         self.somethingWrote = False
+        self.hash_posts = hash_posts
 
     def addReport(self, string, color=''):
         if color != '':
diff --git a/generators/index.py b/generators/index.py
index 4b4e2e3..362eb16 100644
--- a/generators/index.py
+++ b/generators/index.py
@@ -98,9 +98,13 @@ class Index(DynastieGenerator):
             self.addError('File does not exists ' + filename)
             return
 
-        f = open(filename, 'rb')
-        post_content = f.read()
-        f.close()
+        if self.hash_posts is None or not filename in self.hash_posts:
+            f = open(filename, 'rb')
+            post_content = f.read()
+            f.close()
+            self.hash_posts[filename] = post_content
+        else:
+            post_content = self.hash_posts[filename]
 
         while True:
             start = post_content.find('<dyn:code')
@@ -310,18 +314,18 @@ class Index(DynastieGenerator):
         if not directory is None and not os.path.exists(output + self.dirname):
             os.mkdir(output + self.dirname)
 
-        filename = self.dirname + self.filename + '.html'
+        filename = self.dirname + '/' + self.filename + '.html'
 
         while self.cur_page <= self.nb_pages:
             #print 'Generate ' + filename
             nodes = dom.getElementsByTagName("*")
             nodes[0] = self.parse(src, self.hooks, posts, dom, nodes[0])
-            self.writeIfNotTheSame(output + '/' + filename, nodes[0])
+            self.writeIfNotTheSame(output + filename, nodes[0])
             self.cur_page = self.cur_page + 1
-            filename = self.dirname + self.filename + str(self.cur_page) + '.html'
+            filename = self.dirname + '/' + self.filename + str(self.cur_page) + '.html'
             dom = parse(src + '/_%s.html' % name)
 
-        filename = output + '/' + filename
+        filename = output + filename
 
         while os.path.exists(filename):
             self.addReport('Removing unused ' + filename)
@@ -331,7 +335,8 @@ class Index(DynastieGenerator):
                 self.addReport('Removing unused ' + filename)
                 os.unlink(filename)
             self.cur_page = self.cur_page + 1
-            filename = output + '/' + self.filename + str(self.cur_page) + '.html'
+            filename = self.dirname + '/' + self.filename + str(self.cur_page) + '.html'
+            filename = output + filename
 
     def generate(self, blog, src, output):
         from dynastie.models import Post, Blog
diff --git a/models.py b/models.py
index 68b4e9f..9f086ff 100644
--- a/models.py
+++ b/models.py
@@ -149,13 +149,14 @@ class Blog(models.Model):
         self.load_generators()
         self.copytree(self.src_path, self.output_path)
         generated = []
+        hash_posts = {}
         for engine in self.engines:
             if not inspect.ismodule(engine):
                 continue
             for name, obj in inspect.getmembers(engine):
                 if inspect.isclass(obj) and obj.__module__.startswith("dynastie.generators"):
                     if obj.__module__ in generated: continue
-                    e = obj()
+                    e = obj(hash_posts)
                     r = e.generate(self, self.src_path, self.output_path)
                     generated.append(obj.__module__)
                     if not r is None: