diff --git a/.travis.yml b/.travis.yml
index 5a205b2..cb98fdd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,6 @@
 # Wire up travis
 language: python
+sudo: false
 
 env:
   - TOXENV=py26
diff --git a/CHANGES.rst b/CHANGES.rst
index 9c79ce1..ec4bc17 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -54,6 +54,15 @@ Bug Fixes
 - Updated translations: ``fr``, ``de``, ``ja``
 
 
+Backwards Incompatibilities
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+- ``SchemaNode.deserialize`` will now raise an
+  ``UnboundDeferredError`` if the node has an unbound deferred
+  validator.  Previously, deferred validators were silently ignored.
+  See https://github.com/Pylons/colander/issues/47
+
+
 1.0b1 (2013-09-01)
 ------------------
 
@@ -109,6 +118,8 @@ Features
 - The ``typ`` of a ``SchemaNode`` can optionally be pased in as a keyword
   argument. See https://github.com/Pylons/colander/issues/90
 
+- Allow interpolation of `missing_msg` with properties `title` and `name`
+
 1.0a5 (2013-05-31)
 ------------------
 
diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index 46bdd17..e214e3d 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -117,7 +117,10 @@ Contributors
 - Veeti Paananen, 2013/08/20
 - Michael Howitz, 2013/12/05
 - Alex Marandon, 2013/12/21
+- Jaseem Abid, 2014/06/16
 - Cédric Messiant, 2014/06/27
 - Gouji Ochiai, 2014/08/21
 - Tim Tisdall, 2014/09/10
 - Nando Florestan, 2014-11-27
+- Amos Latteier, 2014/11/30
+- Jimmy Thrasibule, 2014/12/11
diff --git a/colander/__init__.py b/colander/__init__.py
index 2abb42d..3229830 100644
--- a/colander/__init__.py
+++ b/colander/__init__.py
@@ -57,6 +57,13 @@ def interpolate(msgs):
         else:
             yield s
 
+class UnboundDeferredError(Exception):
+    """
+    An exception raised by :meth:`SchemaNode.deserialize` when an attempt
+    is made to deserialize a node which has an unbound :class:`deferred`
+    validator.
+    """
+
 class Invalid(Exception):
     """
     An exception raised by data types and validators indicating that
@@ -286,6 +293,9 @@ class Regex(object):
         error message to be used; otherwise, defaults to 'String does
         not match expected pattern'.
 
+        The ``regex`` expression behaviour can be modified by specifying
+        any ``flags`` value taken by ``re.compile``.
+
         The ``regex`` argument may also be a pattern object (the
         result of ``re.compile``) instead of a string.
 
@@ -293,9 +303,9 @@ class Regex(object):
         validation succeeds; otherwise, :exc:`colander.Invalid` is
         raised with the ``msg`` error message.
     """
-    def __init__(self, regex, msg=None):
+    def __init__(self, regex, msg=None, flags=0):
         if isinstance(regex, string_types):
-            self.match_object = re.compile(regex)
+            self.match_object = re.compile(regex, flags)
         else:
             self.match_object = regex
         if msg is None:
@@ -483,6 +493,11 @@ URL_REGEX = r"""(?i)\b((?:[a-z][\w-]+:(?:/{1,3}|[a-z0-9%])|www\d{0,3}[.]|[a-z0-9
 
 url = Regex(URL_REGEX, _('Must be a URL'))
 
+
+UUID_REGEX = r"""^(?:urn:uuid:)?\{?[a-f0-9]{8}(?:-?[a-f0-9]{4}){3}-?[a-f0-9]{12}\}?$"""
+uuid = Regex(UUID_REGEX, _('Invalid UUID string'), re.IGNORECASE)
+
+
 class SchemaType(object):
     """ Base class for all schema types """
     def flatten(self, node, appstruct, prefix='', listitem=False):
@@ -1837,7 +1852,7 @@ class _SchemaNode(object):
     validator = None
     default = null
     missing = required
-    missing_msg = _('Required')
+    missing_msg = 'Required'
     name = ''
     raw_title = _marker
     title = _marker
@@ -1980,15 +1995,21 @@ class _SchemaNode(object):
         if appstruct is null:
             appstruct = self.missing
             if appstruct is required:
-                raise Invalid(self, self.missing_msg)
+                raise Invalid(self, _(self.missing_msg,
+                                      mapping={'title': self.title,
+                                               'name':self.name}))
+
             if isinstance(appstruct, deferred): # unbound schema with deferreds
                 raise Invalid(self, self.missing_msg)
             # We never deserialize or validate the missing value
             return appstruct
 
         if self.validator is not None:
-            if not isinstance(self.validator, deferred): # unbound
-                self.validator(self, appstruct)
+            if isinstance(self.validator, deferred): # unbound
+                raise UnboundDeferredError(
+                    "Schema node {node} has an unbound deferred validator"
+                    .format(node=self))
+            self.validator(self, appstruct)
         return appstruct
 
     def add(self, node):
diff --git a/colander/tests/test_colander.py b/colander/tests/test_colander.py
index 2aa8471..ec4bd24 100644
--- a/colander/tests/test_colander.py
+++ b/colander/tests/test_colander.py
@@ -550,6 +550,57 @@ class Test_url_validator(unittest.TestCase):
         from colander import Invalid
         self.assertRaises(Invalid, self._callFUT, val)
 
+class TestUUID(unittest.TestCase):
+    def _callFUT(self, val):
+        from colander import uuid
+        return uuid(None, val)
+
+    def test_success_hexadecimal(self):
+        val = '123e4567e89b12d3a456426655440000'
+        result = self._callFUT(val)
+        self.assertEqual(result, None)
+
+    def test_success_with_dashes(self):
+        val = '123e4567-e89b-12d3-a456-426655440000'
+        result = self._callFUT(val)
+        self.assertEqual(result, None)
+
+    def test_success_upper_case(self):
+        val = '123E4567-E89B-12D3-A456-426655440000'
+        result = self._callFUT(val)
+        self.assertEqual(result, None)
+
+    def test_success_with_braces(self):
+        val = '{123e4567-e89b-12d3-a456-426655440000}'
+        result = self._callFUT(val)
+        self.assertEqual(result, None)
+
+    def test_success_with_urn_ns(self):
+        val = 'urn:uuid:{123e4567-e89b-12d3-a456-426655440000}'
+        result = self._callFUT(val)
+        self.assertEqual(result, None)
+
+    def test_failure_random_string(self):
+        val = 'not-a-uuid'
+        from colander import Invalid
+        self.assertRaises(Invalid, self._callFUT, val)
+
+    def test_failure_not_hexadecimal(self):
+        val = '123zzzzz-uuuu-zzzz-uuuu-42665544zzzz'
+        from colander import Invalid
+        self.assertRaises(Invalid, self._callFUT, val)
+
+    def test_failure_invalid_length(self):
+        # Correct UUID: 8-4-4-4-12
+        val = '88888888-333-4444-333-cccccccccccc'
+        from colander import Invalid
+        self.assertRaises(Invalid, self._callFUT, val)
+
+    def test_failure_with_invalid_urn_ns(self):
+        val = 'urn:abcd:{123e4567-e89b-12d3-a456-426655440000}'
+        from colander import Invalid
+        self.assertRaises(Invalid, self._callFUT, val)
+
 class TestSchemaType(unittest.TestCase):
     def _makeOne(self, *arg, **kw):
         from colander import SchemaType
@@ -1511,7 +1562,7 @@ class TestInteger(unittest.TestCase):
         result = typ.serialize(node, val)
         self.assertEqual(result, colander.null)
 
-    def test_serialize_emptystring(self):
+    def test_deserialize_emptystring(self):
         import colander
         val = ''
         node = DummySchemaNode(None)
@@ -2474,6 +2525,19 @@ class TestSchemaNode(unittest.TestCase):
         e = invalid_exc(node.deserialize, 1)
         self.assertEqual(e.msg, 'Wrong')
 
+    def test_deserialize_with_unbound_validator(self):
+        from colander import Invalid
+        from colander import deferred
+        from colander import UnboundDeferredError
+        typ = DummyType()
+        def validator(node, kw):
+            def _validate(node, value):
+                node.raise_invalid('Invalid')
+            return _validate
+        node = self._makeOne(typ, validator=deferred(validator))
+        self.assertRaises(UnboundDeferredError, node.deserialize, None)
+        self.assertRaises(Invalid, node.bind(foo='foo').deserialize, None)
+
     def test_deserialize_value_is_null_no_missing(self):
         from colander import null
         from colander import Invalid
@@ -2495,6 +2559,14 @@ class TestSchemaNode(unittest.TestCase):
         e = invalid_exc(node.deserialize, null)
         self.assertEqual(e.msg, 'Missing')
 
+    def test_deserialize_value_with_interpolated_missing_msg(self):
+        from colander import null
+        typ = DummyType()
+        node = self._makeOne(typ, missing_msg='Missing attribute ${title}',
+                             name='name_a')
+        e = invalid_exc(node.deserialize, null)
+        self.assertEqual(e.msg.interpolate(), 'Missing attribute Name A')
+
     def test_deserialize_noargs_uses_default(self):
         typ = DummyType()
         node = self._makeOne(typ)
diff --git a/docs/api.rst b/docs/api.rst
index 8f972bd..15439f5 100644
--- a/docs/api.rst
+++ b/docs/api.rst
@@ -48,6 +48,9 @@ Exceptions
        from a widget as the value which should be redisplayed when an
        error is shown.
 
+  .. autoclass:: UnboundDeferredError
+
+
 Validators
 ~~~~~~~~~~
 
@@ -75,6 +78,11 @@ Validators
  
      A validator which ensures the value is a URL (via regex).
 
+  .. attribute:: uuid
+
+     A UUID hexadecimal string validator via regular expression
+     using :class:`colander.Regex`.
+
 Types
 ~~~~~
 
diff --git a/docs/binding.rst b/docs/binding.rst
index 61e5efa..94340c2 100644
--- a/docs/binding.rst
+++ b/docs/binding.rst
@@ -248,7 +248,8 @@ If you use a schema with deferred ``validator``, ``missing`` or
 ``default`` attributes, but you use it to perform serialization and
 deserialization without calling its ``bind`` method:
 
-- If ``validator`` is deferred, no validation will be performed.
+- If ``validator`` is deferred, :meth:`~colander.SchemaNode.deserialize` will
+  raise an :exc:`~colander.UnboundDeferredError`.
 
 - If ``missing`` is deferred, the field will be considered *required*.
 
diff --git a/docs/changes.rst b/docs/changes.rst
index abb1f10..d9e113e 100644
--- a/docs/changes.rst
+++ b/docs/changes.rst
@@ -1 +1 @@
-.. include:: ../CHANGES.txt
+.. include:: ../CHANGES.rst
diff --git a/setup.py b/setup.py
index 130f79f..81a6314 100644
--- a/setup.py
+++ b/setup.py
@@ -36,7 +36,7 @@ testing_extras = ['nose', 'coverage']
 docs_extras = ['Sphinx']
 
 setup(name='colander',
-      version='1.1dev',
+      version='1.1.dev0',
       description=('A simple schema-based serialization and deserialization '
                    'library'),
       long_description=README + '\n\n' +  CHANGES,