diff -r e34b09c69dd3 Lib/copy.py
--- a/Lib/copy.py	Sat Mar 12 22:31:06 2011 -0500
+++ b/Lib/copy.py	Sun Mar 13 10:00:44 2011 +0100
@@ -76,6 +76,14 @@
     if copier:
         return copier(x)
 
+    try:
+        issc = issubclass(cls, type)
+    except TypeError: # cls is not a class
+        issc = False
+    if issc:
+        # treat it as a regular class:
+        return _copy_immutable(x)
+
     copier = getattr(cls, "__copy__", None)
     if copier:
         return copier(x)
diff -r e34b09c69dd3 Lib/test/test_copy.py
--- a/Lib/test/test_copy.py	Sat Mar 12 22:31:06 2011 -0500
+++ b/Lib/test/test_copy.py	Sun Mar 13 10:00:44 2011 +0100
@@ -3,6 +3,7 @@
 import copy
 import copyreg
 import weakref
+import abc
 from operator import le, lt, ge, gt, eq, ne
 
 import unittest
@@ -87,9 +88,11 @@
             pass
         def f():
             pass
+        class WithMetaclass(metaclass=abc.ABCMeta):
+            pass
         tests = [None, 42, 2**100, 3.14, True, False, 1j,
                  "hello", "hello\u1234", f.__code__,
-                 NewStyle, range(10), Classic, max]
+                 NewStyle, range(10), Classic, max, WithMetaclass]
         for x in tests:
             self.assertTrue(copy.copy(x) is x, repr(x))