diff --git a/BUGS.md b/BUGS.md
index 1ccddc8..95acdf2 100644
--- a/BUGS.md
+++ b/BUGS.md
@@ -1,6 +1,7 @@
 
 # BUGS
 
+- generators e correct scripts que durem muito tempo podem bloquear o loop do tornado?
 - detect questions in questions.yaml without ref -> error ou generate default.
 - topicos virtuais nao deveriam aparecer. na construção da árvore os sucessores seriam ligados directamente aos predecessores.
 - Criar outra estrutura organizada em capítulos (conjuntos de tópicos). Permitir capítulos de capítulos, etc. talvez usar grafos de grafos...
@@ -11,7 +12,6 @@
 
 # TODO
 
-- update de fontawesome para versão 5.
 - reportar comentarios após submeter.
 - each topic only loads a sample of K questions (max) in random order.
 - servir imagens/ficheiros.
@@ -31,6 +31,7 @@
 
 # FIXED
 
+- update de fontawesome para versão 5.0.6.
 - remover learn.css uma vez que nao é usado em lado nenhum?
 - check if user already logged in
 - mover javascript para ficheiros externos e carregar com script defer src
diff --git a/learnapp.py b/learnapp.py
index d750220..474442c 100644
--- a/learnapp.py
+++ b/learnapp.py
@@ -267,9 +267,11 @@ class LearnApp(object):
 #   g.node['my/topic']['name']      name of the topic
 #   g.node['my/topic']['questions'] list of question refs defined in YAML
 #   g.node['my/topic']['factory']   dict with question factories
+#
+# Edges are obtained from the deps defined in the YAML file for each topic.
 # ----------------------------------------------------------------------------
 def build_dependency_graph(config={}):
-    logger.info('Building topic dependency graph.')
+    logger.info('Building graph and loading questions:')
 
     # create graph
     prefix = config.get('path', '.')
@@ -281,18 +283,15 @@ def build_dependency_graph(config={}):
     topics = config.get('topics', {})
     for ref,attr in topics.items():
         g.add_node(ref)
+        tnode = g.node[ref]  # current node (topic)
+
         if isinstance(attr, dict):
-            g.node[ref]['name'] = attr.get('name', ref)
-            g.node[ref]['questions'] = attr.get('questions', [])
+            tnode['name'] = attr.get('name', ref)
+            tnode['questions'] = attr.get('questions', [])
             g.add_edges_from((d,ref) for d in attr.get('deps', []))
 
-    # iterate over topics and create question factories
-    logger.info('Loading:')
-    for tref in g.nodes():
-        tnode = g.node[tref]  # current node (topic)
-        fullpath = path.expanduser(path.join(prefix, tref))
+        fullpath = path.expanduser(path.join(prefix, ref))
         filename = path.join(fullpath, 'questions.yaml')
-
         loaded_questions = load_yaml(filename, default=[])  # list
 
         # if questions not in configuration then load all, preserving order
@@ -303,9 +302,9 @@ def build_dependency_graph(config={}):
         tnode['factory'] = {}
         for q in loaded_questions:
             if q['ref'] in tnode['questions']:
-                q['path'] = fullpath
+                q['path'] = fullpath  # fullpath added to each question
                 tnode['factory'][q['ref']] = QFactory(q)
 
-        logger.info(f'{len(tnode["questions"]):6} from {tref}')
+        logger.info(f'{len(tnode["questions"]):6} from {ref}')
 
     return g
diff --git a/static/js/maintopics.js b/static/js/maintopics.js
index b323c14..284120c 100644
--- a/static/js/maintopics.js
+++ b/static/js/maintopics.js
@@ -1,6 +1,6 @@
 function notify(msg) {
   $("#notifications").html(msg);
-  $("#notifications").fadeIn(250).delay(5000).fadeOut(500);
+  $("#notifications").fadeIn(250).delay(3000).fadeOut(500);
 }
 
 function getCookie(name) {
@@ -9,6 +9,8 @@ function getCookie(name) {
 }
 
 function change_password() {
+  // alert('hello');
+  // notify('hello!');
   var token = getCookie('_xsrf');
   $.ajax({
     type: "POST",
diff --git a/templates/notification.html b/templates/notification.html
index 99c69e9..1019596 100644
--- a/templates/notification.html
+++ b/templates/notification.html
@@ -1,7 +1,4 @@
-
-<div class="alert alert-{{ type }} alert-dismissible" role="alert" id="notification" style="position:absolute;
-  top: 0px; right: 1em;">
-    <!-- <i class="fa fa-check" aria-hidden="true"></i> -->
-    <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>
+<div class="alert alert-{{ type }} alert-dismissible" role="alert" id="notification">
+    <i class="fas fa-key" aria-hidden="true"></i>
     {{ msg }}
 </div>
--
libgit2 0.21.2