Index: src/orca/scripts/toolkits/Gecko/script.py
===================================================================
--- src/orca/scripts/toolkits/Gecko/script.py	(revision 4601)
+++ src/orca/scripts/toolkits/Gecko/script.py	(working copy)
@@ -3064,7 +3064,8 @@
                    or not stateset.contains(pyatspi.STATE_VISIBLE):
                 return False
             attrs = self._getAttrDictionary(event.source)
-            return 'container-live' in attrs
+            return 'container-live' in attrs \
+                   or event.source.getRole() == pyatspi.ROLE_ALERT 
         else:
             return False
 
