diff --git a/qubesmanager/settings.py b/qubesmanager/settings.py
index ce4c370..483a750 100644
--- a/qubesmanager/settings.py
+++ b/qubesmanager/settings.py
@@ -358,11 +358,7 @@ class VMSettingsWindow(Ui_SettingsDialog, QDialog):
         self.vcpus.setMaximum(QubesHost().no_cpus)
         self.vcpus.setValue(int(self.vm.vcpus))
 
-        if len(self.vm.pcidevs) > 0:
-            self.include_in_balancing.setEnabled(False)
-        else:
-            self.include_in_balancing.setChecked('meminfo-writer' in self.vm.services and self.vm.services['meminfo-writer']==True)
-            self.tabWidget.setTabEnabled(self.tabs_indices["devices"], not self.include_in_balancing.isChecked())
+        self.include_in_balancing.setChecked('meminfo-writer' in self.vm.services and self.vm.services['meminfo-writer']==True)
 
         #kernel
         if self.vm.template is not None:
@@ -393,7 +389,6 @@ class VMSettingsWindow(Ui_SettingsDialog, QDialog):
         else:
             self.kernel_opts.setText(self.vm.kernelopts)
 
-
                 
         #paths
         self.dir_path.setText(self.vm.dir_path)
@@ -463,6 +458,13 @@ class VMSettingsWindow(Ui_SettingsDialog, QDialog):
             else:
                 self.dev_list.available_list.addItem( DevListWidgetItem(d[0], d[1]))
 
+        if self.dev_list.selected_list.count() > 0 and self.include_in_balancing.isChecked():
+            self.dmm_warning_adv.show()
+            self.dmm_warning_dev.show()
+        else:
+            self.dmm_warning_adv.hide()
+            self.dmm_warning_dev.hide()
+
 
     def __apply_devices_tab__(self):
         sth_changed = False
@@ -487,10 +489,21 @@ class VMSettingsWindow(Ui_SettingsDialog, QDialog):
             self.anything_changed = True
 
     def include_in_balancing_state_changed(self, state):
-        self.tabWidget.setTabEnabled(self.tabs_indices["devices"], not state == QtCore.Qt.Checked)
-
+        if self.dev_list.selected_list.count() > 0:
+            if state == QtCore.Qt.Checked:
+                self.dmm_warning_adv.show()
+                self.dmm_warning_dev.show()
+            else:
+                self.dmm_warning_adv.hide()
+                self.dmm_warning_dev.hide()
     def devices_selection_changed(self):
-        self.include_in_balancing.setEnabled(self.dev_list.selected_list.count() == 0)
+        if self.include_in_balancing.isChecked():
+            if self.dev_list.selected_list.count() > 0 :
+                self.dmm_warning_adv.show()
+                self.dmm_warning_dev.show()
+            else:
+                self.dmm_warning_adv.hide()
+                self.dmm_warning_dev.hide()
 
     ######## services tab
 
@@ -516,7 +529,6 @@ class VMSettingsWindow(Ui_SettingsDialog, QDialog):
         row = self.services_list.currentRow()
         if row:
             item = self.services_list.takeItem(row)
-            print item.text()
             del self.new_srv_dict[str(item.text())]
 
     def __apply_services_tab__(self):
diff --git a/settingsdlg.ui b/settingsdlg.ui
index 5d27fc2..4cb4d8a 100644
--- a/settingsdlg.ui
+++ b/settingsdlg.ui
@@ -29,7 +29,7 @@
         <locale language="English" country="UnitedStates"/>
        </property>
        <property name="currentIndex">
-        <number>0</number>
+        <number>1</number>
        </property>
        <widget class="QWidget" name="basic_tab">
         <property name="locale">
@@ -411,6 +411,26 @@
               </property>
              </widget>
             </item>
+            <item row="4" column="0" colspan="3">
+             <widget class="QLabel" name="dmm_warning_adv">
+              <property name="font">
+               <font>
+                <weight>75</weight>
+                <italic>true</italic>
+                <bold>true</bold>
+               </font>
+              </property>
+              <property name="styleSheet">
+               <string notr="true">color:rgb(255, 0, 0)</string>
+              </property>
+              <property name="text">
+               <string>Dynamic memory balancing can result in some devices not working!</string>
+              </property>
+              <property name="wordWrap">
+               <bool>true</bool>
+              </property>
+             </widget>
+            </item>
            </layout>
           </widget>
          </item>
@@ -731,7 +751,25 @@
         </attribute>
         <layout class="QGridLayout" name="gridLayout_6">
          <item row="0" column="0">
-          <layout class="QVBoxLayout" name="devices_layout"/>
+          <layout class="QVBoxLayout" name="devices_layout">
+           <item>
+            <widget class="QLabel" name="dmm_warning_dev">
+             <property name="font">
+              <font>
+               <weight>75</weight>
+               <italic>true</italic>
+               <bold>true</bold>
+              </font>
+             </property>
+             <property name="styleSheet">
+              <string notr="true">color: rgb(255, 0, 0)</string>
+             </property>
+             <property name="text">
+              <string>You've enabled dynamic memory balancing, some devices might not work!</string>
+             </property>
+            </widget>
+           </item>
+          </layout>
          </item>
         </layout>
        </widget>