Index: /trunk/src/VBox/Frontends/VirtualBox/src/settings/machine/UIMachineSettingsNetwork.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/settings/machine/UIMachineSettingsNetwork.cpp	(revision 37944)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/settings/machine/UIMachineSettingsNetwork.cpp	(revision 37945)
@@ -294,4 +294,6 @@
     m_pMACEditor->setEnabled(m_pParent->isMachineOffline());
     m_pMACButton->setEnabled(m_pParent->isMachineOffline());
+    m_pGenericPropertiesLabel->setEnabled(m_pParent->isMachineInValidMode());
+    m_pGenericPropertiesTextEdit->setEnabled(m_pParent->isMachineInValidMode());
     m_pPortForwardingButton->setEnabled(m_pParent->isMachineInValidMode() &&
                                         attachmentType() == KNetworkAttachmentType_NAT);