diff --git a/qubesmanager/qube_manager.py b/qubesmanager/qube_manager.py
index 9cb6ef1..1a23e7f 100755
--- a/qubesmanager/qube_manager.py
+++ b/qubesmanager/qube_manager.py
@@ -291,7 +291,10 @@ class VmManagerWindow(ui_qubemanager.Ui_VmManagerWindow, QtGui.QMainWindow):
         self.table.setColumnWidth(self.columns_indices["Backups"], 60)
         self.table.setColumnWidth(self.columns_indices["Last backup"], 90)
 
-        self.table.horizontalHeader().setResizeMode(QtGui.QHeaderView.Fixed)
+        self.table.horizontalHeader().setResizeMode(
+            QtGui.QHeaderView.Interactive)
+        self.table.horizontalHeader().setStretchLastSection(True)
+
 
         self.table.sortItems(self.columns_indices[self.sort_by_column],
                              self.sort_order)
diff --git a/qubesmanager/table_widgets.py b/qubesmanager/table_widgets.py
index efa3fe6..1a426de 100644
--- a/qubesmanager/table_widgets.py
+++ b/qubesmanager/table_widgets.py
@@ -505,7 +505,9 @@ class VmLastBackupItem(QtGui.QTableWidgetItem):
         self.setFlags(QtCore.Qt.ItemIsSelectable | QtCore.Qt.ItemIsEnabled)
 
         self.vm = vm
-        if getattr(self.vm, 'backup_timestamp', None):
+        self.backup_timestamp = getattr(self.vm, 'backup_timestamp', None)
+
+        if self.backup_timestamp:
             self.setText(
                 str(datetime.datetime.fromtimestamp(self.vm.backup_timestamp)))
         else:
@@ -516,10 +518,10 @@ class VmLastBackupItem(QtGui.QTableWidgetItem):
             return True
         elif other.vm.qid == 0:
             return False
-        elif self.vm.backup_timestamp == other.vm.backup_timestamp:
+        elif self.backup_timestamp == other.backup_timestamp:
             return self.vm.name < other.vm.name
-        elif not self.vm.backup_timestamp:
+        elif not self.backup_timestamp:
             return False
-        elif not other.vm.backup_timestamp:
+        elif not other.backup_timestamp:
             return True
-        return self.vm.backup_timestamp < other.vm.backup_timestamp
+        return self.backup_timestamp < other.backup_timestamp