Don't delete link configuration if there is still an active link using it.

src/comm/LinkManager.cc

@@ -506,6 +506,8 @@ void LinkManager::_updateConfigurationList(void)
         // We only care about dynamic links
         if(pLink->isDynamic()) {
             if(pLink->type() == LinkConfiguration::TypeSerial) {
+                // Don't mess with connected link. Let it deal with the disapearing device.
+                if(pLink->getLink() == NULL) {
                     SerialConfiguration* pSerial = dynamic_cast<SerialConfiguration*>(pLink);
                     if(!currentPorts.contains(pSerial->portName())) {
                         _confToDelete.append(pSerial);
@@ -513,6 +515,7 @@ void LinkManager::_updateConfigurationList(void)
                 }
             }
         }
+    }
     // Now remove all links that are gone
     foreach (LinkConfiguration* pDelete, _confToDelete) {
         removeLinkConfiguration(pDelete);