diff -r 98399c347108 Lib/warnings.py
--- a/Lib/warnings.py	Thu Apr 29 22:34:25 2010 +0200
+++ b/Lib/warnings.py	Thu Apr 29 22:38:52 2010 -0400
@@ -216,9 +216,6 @@
         text = message
         message = category(message)
     key = (text, category, lineno)
-    # Quick test for common case
-    if registry.get(key):
-        return
     # Search the filters
     for item in filters:
         action, msg, cat, mod, ln = item
@@ -229,6 +226,14 @@
             break
     else:
         action = defaultaction
+
+    if action == "always":
+        registry.pop(key, None)
+
+    # Quick test for common case
+    if registry.get(key):
+        return
+
     # Early exit actions
     if action == "ignore":
         registry[key] = 1