diff --git a/colab/search/utils.py b/colab/search/utils.py
index 3145dc5..6dd75d8 100644
--- a/colab/search/utils.py
+++ b/colab/search/utils.py
@@ -41,13 +41,13 @@ def get_visible_threads(logged_user, filter_by_user=None):
 
 def get_collaboration_data(logged_user, filter_by_user=None):
     latest_results = []
-    count_types = cache.get('home_chart')
+    count_types = cache.get('home_chart'+getattr(filter_by_user, "username", ""))
     populate_count_types = False
 
     if count_types is None:
         populate_count_types = True
         count_types = OrderedDict()
-        visible_threads = get_visible_threads(logged_user)
+        visible_threads = get_visible_threads(logged_user, filter_by_user)
         count_types[_('Emails')] = len(visible_threads)
 
     messages = get_visible_threads(logged_user, filter_by_user)
@@ -89,6 +89,6 @@ def get_collaboration_data(logged_user, filter_by_user=None):
                 count_types[verbose_name] = elements_count
 
     if populate_count_types:
-        cache.set('home_chart', count_types, 30)
+        cache.set('home_chart'+getattr(filter_by_user, "username", ""), count_types, 30)
 
     return latest_results, count_types
--
libgit2 0.21.2