diff --git a/orchestra/contrib/orders/admin.py b/orchestra/contrib/orders/admin.py
index a0224d0a..171aa60d 100644
--- a/orchestra/contrib/orders/admin.py
+++ b/orchestra/contrib/orders/admin.py
@@ -75,8 +75,11 @@ class OrderAdmin(AccountAdminMixin, ExtendedModelAdmin):
     def display_billed_until(self, order):
         billed_until = order.billed_until
         red = False
+        human = escape(naturaldate(billed_until))
         if billed_until:
-            if order.service.payment_style == order.service.POSTPAY:
+            if order.service.billing_period == order.service.NEVER:
+                human = _("Forever")
+            elif order.service.payment_style == order.service.POSTPAY:
                 boundary = order.service.handler.get_billing_point(order)
                 if billed_until < boundary:
                     red = True
@@ -84,7 +87,7 @@ class OrderAdmin(AccountAdminMixin, ExtendedModelAdmin):
                 red = True
         color = 'style="color:red;"' if red else ''
         return '<span title="{raw}" {color}>{human}</span>'.format(
-            raw=escape(str(billed_until)), color=color, human=escape(naturaldate(billed_until)),
+            raw=escape(str(billed_until)), color=color, human=human,
         )
     display_billed_until.short_description = _("billed until")
     display_billed_until.allow_tags = True
diff --git a/orchestra/contrib/orders/filters.py b/orchestra/contrib/orders/filters.py
index 1e05166d..fa768d46 100644
--- a/orchestra/contrib/orders/filters.py
+++ b/orchestra/contrib/orders/filters.py
@@ -1,11 +1,13 @@
 from datetime import timedelta
 
+from django.apps import apps
 from django.contrib.admin import SimpleListFilter
 from django.db.models import Q, Prefetch, F
 from django.utils import timezone
 from django.utils.encoding import force_text
 from django.utils.translation import ugettext_lazy as _
 
+from . import settings
 from .models import MetricStorage
 
 
@@ -56,8 +58,13 @@ class BilledOrderListFilter(SimpleListFilter):
         metric_queryset = queryset.exclude(service__metric='').exclude(billed_on__isnull=True)
         for order in metric_queryset.prefetch_related(prefetch_valid_metrics, prefetch_billed_metric):
             if len(order.billed_metric) != 1:
-                raise ValueError("Data inconsistency #metrics %i != 1." % len(order.billed_metric))
-            billed_metric = order.billed_metric[0].value
+                # corner case of prefetch_billed_metric: Does not always work with latests metrics
+                latest = order.metrics.latest()
+                if not latest:
+                    raise ValueError("Data inconsistency #metrics %i != 1." % len(order.billed_metric))
+                billed_metric = latest.value
+            else:
+                billed_metric = order.billed_metric[0].value
             for metric in order.valid_metrics:
                 if metric.created_on <= order.billed_on:
                     raise ValueError("This value should already be filtered on the prefetch query.")
@@ -72,15 +79,18 @@ class BilledOrderListFilter(SimpleListFilter):
         elif self.value() == 'no':
             return queryset.exclude(billed_until__isnull=False, billed_until__gte=timezone.now())
         elif self.value() == 'pending':
+            Service = apps.get_model(settings.ORDERS_SERVICE_MODEL)
             return queryset.filter(
                 Q(pk__in=self.get_pending_metric_pks(queryset)) | Q(
-                    Q(billed_until__isnull=True) | Q(billed_until__lt=timezone.now())
+                    Q(billed_until__isnull=True) | Q(~Q(service__billing_period=Service.NEVER) &
+                        Q(billed_until__lt=timezone.now()))
                 )
             )
         elif self.value() == 'not_pending':
             return queryset.exclude(
                 Q(pk__in=self.get_pending_metric_pks(queryset)) | Q(
-                    Q(billed_until__isnull=True) | Q(billed_until__lt=timezone.now())
+                    Q(billed_until__isnull=True) | Q(~Q(service__billing_period=Service.NEVER) &
+                        Q(billed_until__lt=timezone.now()))
                 )
             )
         return queryset
diff --git a/orchestra/contrib/resources/actions.py b/orchestra/contrib/resources/actions.py
index 8ace0996..70917489 100644
--- a/orchestra/contrib/resources/actions.py
+++ b/orchestra/contrib/resources/actions.py
@@ -12,7 +12,7 @@ def run_monitor(modeladmin, request, queryset):
     for resource in queryset:
         rlogs = resource.monitor()
         if not async:
-            logs = logs.union(set(map(str, rlogs)))
+            logs = logs.union(set([str(log.pk) for log in rlogs]))
         modeladmin.log_change(request, resource, _("Run monitors"))
     if async:
         num = len(queryset)
diff --git a/orchestra/contrib/resources/admin.py b/orchestra/contrib/resources/admin.py
index 4679b8b2..1623404b 100644
--- a/orchestra/contrib/resources/admin.py
+++ b/orchestra/contrib/resources/admin.py
@@ -1,3 +1,5 @@
+from urllib.parse import parse_qs
+
 from django.conf.urls import url
 from django.contrib import admin, messages
 from django.contrib.contenttypes.admin import GenericTabularInline
@@ -16,6 +18,7 @@ from orchestra.utils import db, sys
 from orchestra.utils.functional import cached
 
 from .actions import run_monitor
+from .filters import ResourceDataListFilter
 from .forms import ResourceForm
 from .models import Resource, ResourceData, MonitorData
 
@@ -147,25 +150,14 @@ class ResourceDataAdmin(ExtendedModelAdmin):
         return False
     
     def used_monitordata_view(self, request, object_id):
-        """
-        Does the redirect on a separated view for performance reassons
-        (calculate this on a changelist is expensive)
-        """
-        data = self.get_object(request, object_id)
-        ids = []
-        for dataset in data.get_monitor_datasets():
-            if isinstance(dataset, MonitorData):
-                ids.append(dataset.id)
-            else:
-                ids += dataset.values_list('id', flat=True)
         url = reverse('admin:resources_monitordata_changelist')
-        url += '?id__in=%s' % ','.join(map(str, ids))
+        url += '?resource_data=%s' % object_id
         return redirect(url)
 
 
 class MonitorDataAdmin(ExtendedModelAdmin):
     list_display = ('id', 'monitor', 'display_created', 'value', 'content_object_link')
-    list_filter = ('monitor',)
+    list_filter = ('monitor', ResourceDataListFilter)
     add_fields = ('monitor', 'content_type', 'object_id', 'created_at', 'value')
     fields = ('monitor', 'content_type', 'content_object_link', 'display_created', 'value')
     change_readonly_fields = fields
@@ -173,8 +165,23 @@ class MonitorDataAdmin(ExtendedModelAdmin):
     content_object_link = admin_link('content_object')
     display_created = admin_date('created_at', short_description=_("Created"))
     
+    def filter_used_monitordata(self, request, queryset):
+        query_string = parse_qs(request.META['QUERY_STRING'])
+        resource_data = query_string.get('resource_data')
+        if resource_data:
+            data = ResourceData.objects.get(pk=int(resource_data[0]))
+            ids = []
+            for dataset in data.get_monitor_datasets():
+                if isinstance(dataset, MonitorData):
+                    ids.append(dataset.id)
+                else:
+                    ids += dataset.values_list('id', flat=True)
+            return queryset.filter(id__in=ids)
+        return queryset
+    
     def get_queryset(self, request):
         queryset = super(MonitorDataAdmin, self).get_queryset(request)
+        queryset = self.filter_used_monitordata(request, queryset)
         return queryset.prefetch_related('content_object')
 
 
diff --git a/orchestra/contrib/resources/filters.py b/orchestra/contrib/resources/filters.py
new file mode 100644
index 00000000..91ea81a3
--- /dev/null
+++ b/orchestra/contrib/resources/filters.py
@@ -0,0 +1,17 @@
+from django.contrib.admin import SimpleListFilter
+from django.utils.translation import ugettext_lazy as _
+
+
+class ResourceDataListFilter(SimpleListFilter):
+    """ Mock filter to avoid e=1 """
+    title = _("Resource data")
+    parameter_name = 'resource_data'
+    
+    def lookups(self, request, model_admin):
+        return ()
+    
+    def queryset(self, request, queryset):
+        return queryset
+    
+    def choices(self, cl):
+        return []
diff --git a/orchestra/contrib/resources/models.py b/orchestra/contrib/resources/models.py
index 4d48aab7..bc4b2357 100644
--- a/orchestra/contrib/resources/models.py
+++ b/orchestra/contrib/resources/models.py
@@ -225,8 +225,8 @@ class ResourceData(models.Model):
     def monitor(self, async=False):
         ids = (self.object_id,)
         if async:
-            return tasks.monitor.delay(self.resource_id, ids=ids, async=async)
-        return tasks.monitor(self.resource_id, ids=ids, async=async)
+            return tasks.monitor.delay(self.resource_id, ids=ids)
+        return tasks.monitor(self.resource_id, ids=ids)
     
     def get_monitor_datasets(self):
         resource = self.resource