Index: /trunk/src/VBox/Frontends/VirtualBox/src/runtime/UISession.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/runtime/UISession.cpp	(revision 59887)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/runtime/UISession.cpp	(revision 59888)
@@ -213,7 +213,20 @@
             return false;
 
-    /* Check if we missed a really quick termination after successful startup: */
-    if (isTurnedOff())
-        return false;
+    /* Check if we missed a really quick termination after successful powerUp().
+     * We should take into account the fact of async machine-state arrival.
+     * And we don't even want to loop at this point to handle posted
+     * machine-state events, so we are relying onto CMachine getter
+     * to return the fresh state of the thing we want. */
+    const KMachineState ms = machine().GetState();
+    switch (ms)
+    {
+        case KMachineState_PoweredOff:
+        case KMachineState_Saved:
+        case KMachineState_Teleported:
+        case KMachineState_Aborted:
+            return false;
+        default:
+            break;
+    }
 
     /* Postprocess initialization: */