diff --git a/orchestra/apps/lists/backends.py b/orchestra/apps/lists/backends.py
index 8e20b17e..8fc2c864 100644
--- a/orchestra/apps/lists/backends.py
+++ b/orchestra/apps/lists/backends.py
@@ -160,26 +160,25 @@ class MailmanTraffic(ServiceMonitor):
                 MAILMAN_LOG="$4"
                 
                 SUBSCRIBERS=$(list_members ${LIST_NAME} | wc -l)
-                SIZE=$(grep ' post to ${LIST_NAME} ' "${MAILMAN_LOG}" \\
+                SIZE=$(grep " post to ${LIST_NAME} " "${MAILMAN_LOG}" \\
                        | awk '"$LAST_DATE"<=$0 && $0<="%s"' \\
                        | sed 's/.*size=\([0-9]*\).*/\\1/' \\
                        | tr '\\n' '+' \\
-                       | xargs -i echo {} )
+                       | xargs -i echo {}0 )
                 echo ${OBJECT_ID} $(( ${SIZE}*${SUBSCRIBERS} ))
             }""") % current_date)
     
     def monitor(self, mail_list):
         context = self.get_context(mail_list)
         self.append(
-            'monitor %(object_id)i %(last_date)s "%(list_name)s" "%(mailman_log)s{,.1}"' % context)
+            'monitor %(object_id)i "%(last_date)s" "%(list_name)s" %(mailman_log)s{,.1}' % context)
     
     def get_context(self, mail_list):
-        last_date = timezone.localtime(self.get_last_date(mail_list.pk))
         return {
             'mailman_log': settings.LISTS_MAILMAN_POST_LOG_PATH,
             'list_name': mail_list.name,
             'object_id': mail_list.pk,
-            'last_date': last_date.strftime("%b %d %H:%M:%S"),
+            'last_date': self.get_last_date(mail_list.pk).strftime("%b %d %H:%M:%S"),
         }
 
 
diff --git a/orchestra/apps/orchestration/middlewares.py b/orchestra/apps/orchestration/middlewares.py
index 081d7990..82280e49 100644
--- a/orchestra/apps/orchestration/middlewares.py
+++ b/orchestra/apps/orchestration/middlewares.py
@@ -25,13 +25,12 @@ def pre_delete_collector(sender, *args, **kwargs):
 
 @receiver(m2m_changed, dispatch_uid='orchestration.m2m_collector')
 def m2m_collector(sender, *args, **kwargs):
-    # m2m relations without intermediary models are shit
-    # model.post_save is not sent and by the time related.post_save is sent
-    # the objects are not accessible with RelatedManager.all()
+    # m2m relations without intermediary models are shit. Model.post_save is not sent and
+    # by the time related.post_save is sent rel objects are not accessible via RelatedManager.all()
     # We have to use this inefficient technique of collecting the instances via m2m_changed.post_add
-    if kwargs.pop('action') == 'post_add':
-        for pk in kwargs['pk_set']:
-            kwargs['instance'] = kwargs['model'].objects.get(pk=pk)
+    if kwargs.pop('action') == 'post_add' and kwargs['pk_set']:
+        for instance in kwargs['model'].objects.filter(pk__in=kwargs['pk_set']):
+            kwargs['instance'] = instance
             OperationsMiddleware.collect(Operation.SAVE, **kwargs)
 
 
diff --git a/orchestra/apps/orchestration/models.py b/orchestra/apps/orchestration/models.py
index d34293de..797a10b4 100644
--- a/orchestra/apps/orchestration/models.py
+++ b/orchestra/apps/orchestration/models.py
@@ -99,6 +99,8 @@ class BackendOperation(models.Model):
     DELETE = 'delete'
     SAVE = 'save'
     MONITOR = 'monitor'
+    EXCEEDED = 'exceeded'
+    RECOVERY = 'recovery'
     
     log = models.ForeignKey('orchestration.BackendLog', related_name='operations')
     backend = models.CharField(_("backend"), max_length=256)
diff --git a/orchestra/apps/resources/tasks.py b/orchestra/apps/resources/tasks.py
index 196ec182..6d3d2b02 100644
--- a/orchestra/apps/resources/tasks.py
+++ b/orchestra/apps/resources/tasks.py
@@ -41,10 +41,12 @@ def monitor(resource_id, ids=None, async=True):
         data = ResourceData.get_or_create(obj, resource)
         data.update()
         if not resource.disable_trigger:
-            if data.used > data.allocated:
-                op = Operation.create(backend, obj, Operation.EXCEED)
+            a = data.used
+            b = data.allocated
+            if data.used > (data.allocated or 0):
+                op = Operation.create(backend, obj, Operation.EXCEEDED)
                 triggers.append(op)
-            elif data.used < data.allocated:
+            elif data.used < (data.allocated or 0):
                 op = Operation.create(backend, obj, Operation.RECOVERY)
                 triggers.append(op)
     Operation.execute(triggers)
diff --git a/orchestra/conf/base_settings.py b/orchestra/conf/base_settings.py
index 49b874b4..4c594510 100644
--- a/orchestra/conf/base_settings.py
+++ b/orchestra/conf/base_settings.py
@@ -95,7 +95,7 @@ INSTALLED_APPS = (
     'admin_tools',
     'admin_tools.theming',
     'admin_tools.menu',
-#    'admin_tools.dashboard',
+    'admin_tools.dashboard',
     'rest_framework',
     'rest_framework.authtoken',
     'passlib.ext.django',
diff --git a/orchestra/utils/humanize.py b/orchestra/utils/humanize.py
index 2794a313..c8b0c5cd 100644
--- a/orchestra/utils/humanize.py
+++ b/orchestra/utils/humanize.py
@@ -164,3 +164,18 @@ def text2int(textnum, numwords={}):
     
     return result + current
 
+
+UNITS_CONVERSIONS = {
+    1024**4: ['TB', 'TiB', 'TERABYTES'],
+    1024**3: ['GB', 'GiB', 'GYGABYTES'],
+    1024**2: ['MB', 'MiB', 'MEGABYTES'],
+    1024: ['KB', 'KiB', 'KYLOBYTES'],
+    1: ['B', 'BYTES'],
+}
+
+def unit_to_bytes(unit):
+    unit = unit.upper()
+    for bytes, units in UNITS_CONVERSIONS.iteritems():
+        if unit in units:
+            return bytes
+    raise KeyError("%s is not a valid unit." % unit)