diff --git a/src/Spring/Spring.Core/Validation/ExclusiveValidatorGroup.cs b/src/Spring/Spring.Core/Validation/ExclusiveValidatorGroup.cs
index fc5431f6..1711c3b0 100644
--- a/src/Spring/Spring.Core/Validation/ExclusiveValidatorGroup.cs
+++ b/src/Spring/Spring.Core/Validation/ExclusiveValidatorGroup.cs
@@ -82,7 +82,7 @@ namespace Spring.Validation
         /// <returns><c>True</c> if validation was successful, <c>False</c> otherwise.</returns>
         protected override bool ValidateGroup(IDictionary contextParams, IValidationErrors errors, object validationContext)
         {
-            IValidationErrors tmpErrors = new ValidationErrors();
+            ValidationErrors tmpErrors = new ValidationErrors();
             bool valid = false;
             foreach (IValidator validator in Validators)
             {
@@ -101,6 +101,11 @@ namespace Spring.Validation
                 }
             }
 
+            if (!valid)
+            {
+                errors.MergeErrors(tmpErrors);
+            }
+
             return valid;            
         }
 
diff --git a/test/Spring/Spring.Core.Tests/Validation/AnyValidatorGroupTests.cs b/test/Spring/Spring.Core.Tests/Validation/AnyValidatorGroupTests.cs
index 942af532..6f226980 100644
--- a/test/Spring/Spring.Core.Tests/Validation/AnyValidatorGroupTests.cs
+++ b/test/Spring/Spring.Core.Tests/Validation/AnyValidatorGroupTests.cs
@@ -21,7 +21,7 @@
 #region Imports
 
 using NUnit.Framework;
-
+using Rhino.Mocks;
 using Spring.Expressions;
 
 #endregion
@@ -35,6 +35,13 @@ namespace Spring.Validation
     [TestFixture]
     public sealed class AnyValidatorGroupTests
     {
+        [Test]
+        public void DefaultsToFastValidate()
+        {
+            AnyValidatorGroup vg = new AnyValidatorGroup();
+            Assert.IsTrue(vg.FastValidate);
+        }
+
         [Test]
         public void WhenAllValidatorsReturnFalse()
         {
@@ -72,9 +79,33 @@ namespace Spring.Validation
         }
 
         [Test]
-        public void WhenSingleValidatorReturnsTrue()
+        public void WhenSingleValidatorReturnsTrueFastAndFastValidateIsTrue()
         {
             AnyValidatorGroup vg = new AnyValidatorGroup(Expression.Parse("true"));
+            vg.FastValidate = true;
+
+            WhenSingleValidatorReturnsTrue(vg);
+            // validators are called only until validation result is known
+            Assert.IsTrue( ((BaseTestValidator)vg.Validators[0]).WasCalled );
+            Assert.IsTrue( ((BaseTestValidator)vg.Validators[1]).WasCalled );
+            Assert.IsFalse( ((BaseTestValidator)vg.Validators[2]).WasCalled );
+        }
+
+        [Test]
+        public void WhenSingleValidatorReturnsTrueAndFastValidateIsFalse()
+        {
+            AnyValidatorGroup vg = new AnyValidatorGroup(Expression.Parse("true"));
+            vg.FastValidate = false;
+
+            WhenSingleValidatorReturnsTrue(vg);
+            // ALL validators are called
+            Assert.IsTrue( ((BaseTestValidator)vg.Validators[0]).WasCalled );
+            Assert.IsTrue( ((BaseTestValidator)vg.Validators[1]).WasCalled );
+            Assert.IsTrue( ((BaseTestValidator)vg.Validators[2]).WasCalled );            
+        }
+
+        private static void WhenSingleValidatorReturnsTrue(AnyValidatorGroup vg)
+        {
             vg.Validators.Add(new FalseValidator());
             vg.Validators.Add(new TrueValidator());
             vg.Validators.Add(new FalseValidator());
diff --git a/test/Spring/Spring.Core.Tests/Validation/CollectionValidatorTests.cs b/test/Spring/Spring.Core.Tests/Validation/CollectionValidatorTests.cs
index 23e96ac4..56a37a85 100644
--- a/test/Spring/Spring.Core.Tests/Validation/CollectionValidatorTests.cs
+++ b/test/Spring/Spring.Core.Tests/Validation/CollectionValidatorTests.cs
@@ -20,6 +20,13 @@ namespace Spring.Validation
     [TestFixture]
     public class CollectionValidatorTests
     {
+        [Test]
+        public void DefaultsToFastValidateIsFalse()
+        {
+            CollectionValidator cg = new CollectionValidator();
+            Assert.IsFalse(cg.FastValidate);
+        }
+
         [Test]
         public void TestCollection()
         {
diff --git a/test/Spring/Spring.Core.Tests/Validation/ExclusiveValidatorGroupTests.cs b/test/Spring/Spring.Core.Tests/Validation/ExclusiveValidatorGroupTests.cs
index cc1b7228..83419944 100644
--- a/test/Spring/Spring.Core.Tests/Validation/ExclusiveValidatorGroupTests.cs
+++ b/test/Spring/Spring.Core.Tests/Validation/ExclusiveValidatorGroupTests.cs
@@ -36,6 +36,13 @@ namespace Spring.Validation
     [TestFixture]
     public sealed class ExclusiveValidatorGroupTests
     {
+        [Test]
+        public void DefaultsToFastValidate()
+        {
+            ExclusiveValidatorGroup evg = new ExclusiveValidatorGroup();
+            Assert.IsTrue(evg.FastValidate);
+        }
+
         [Test]
         public void WhenAllValidatorsReturnFalse()
         {
@@ -52,7 +59,7 @@ namespace Spring.Validation
             bool valid = vg.Validate(new object(), errors);
 
             Assert.IsFalse(valid, "Validation should fail when all inner validators return false.");
-            Assert.AreEqual(0, errors.GetErrors("errors").Count);
+            Assert.AreEqual(3, errors.GetErrors("errors").Count);
             Assert.AreEqual(1, errors.GetErrors("exclusiveErrors").Count);
             Assert.AreEqual(1, errors.GetErrors("existingErrors").Count);
         }
@@ -97,6 +104,59 @@ namespace Spring.Validation
             Assert.AreEqual(0, errors.GetErrors("errors").Count);
             Assert.AreEqual(0, errors.GetErrors("exclusiveErrors").Count);
             Assert.AreEqual(1, errors.GetErrors("existingErrors").Count);
+
+            // ALL validators are called
+            Assert.IsTrue( ((BaseTestValidator)vg.Validators[0]).WasCalled );
+            Assert.IsTrue( ((BaseTestValidator)vg.Validators[1]).WasCalled );
+            Assert.IsTrue( ((BaseTestValidator)vg.Validators[2]).WasCalled );
+        }
+
+        [Test]
+        public void WhenMultipleValidatorsReturnTrueAndFastValidate()
+        {
+            ExclusiveValidatorGroup vg = new ExclusiveValidatorGroup(Expression.Parse("true"));
+            vg.FastValidate = true;
+            IValidationErrors errors = new ValidationErrors();
+            WhenMultipleValidatorsReturnTrue(vg, errors);
+            // validators are called only until validation result is known
+            Assert.AreEqual(1, errors.GetErrors("errors").Count);
+            Assert.IsTrue( ((BaseTestValidator)vg.Validators[0]).WasCalled );
+            Assert.IsTrue( ((BaseTestValidator)vg.Validators[1]).WasCalled );
+            Assert.IsTrue( ((BaseTestValidator)vg.Validators[2]).WasCalled );
+            Assert.IsFalse( ((BaseTestValidator)vg.Validators[3]).WasCalled );
+        }
+
+        [Test]
+        public void WhenMultipleValidatorsReturnTrueAndNotFastValidate()
+        {
+            ExclusiveValidatorGroup vg = new ExclusiveValidatorGroup(Expression.Parse("true"));
+            vg.FastValidate = false;
+            IValidationErrors errors = new ValidationErrors();
+            WhenMultipleValidatorsReturnTrue(vg, errors);
+            // ALL validators are called
+            Assert.AreEqual(2, errors.GetErrors("errors").Count);
+            Assert.IsTrue( ((BaseTestValidator)vg.Validators[0]).WasCalled );
+            Assert.IsTrue( ((BaseTestValidator)vg.Validators[1]).WasCalled );
+            Assert.IsTrue( ((BaseTestValidator)vg.Validators[2]).WasCalled );
+            Assert.IsTrue( ((BaseTestValidator)vg.Validators[3]).WasCalled );
+        }
+
+        private void WhenMultipleValidatorsReturnTrue(ExclusiveValidatorGroup vg, IValidationErrors errors)
+        {
+            vg.Actions.Add(new ErrorMessageAction("exclusiveError", "exclusiveErrors"));
+
+            vg.Validators.Add(new FalseValidator());
+            vg.Validators.Add(new TrueValidator());
+            vg.Validators.Add(new TrueValidator());
+            vg.Validators.Add(new FalseValidator());
+
+            errors.AddError("existingErrors", new ErrorMessage("error", null));
+
+            bool valid = vg.Validate(new object(), errors);
+
+            Assert.IsFalse(valid, "Validation should not succeed when multiple inner validators return true.");
+            Assert.AreEqual(1, errors.GetErrors("exclusiveErrors").Count);
+            Assert.AreEqual(1, errors.GetErrors("existingErrors").Count);
         }
 
         [Test]
diff --git a/test/Spring/Spring.Core.Tests/Validation/HelperClasses.cs b/test/Spring/Spring.Core.Tests/Validation/HelperClasses.cs
index 96aa4299..06ae2b2b 100644
--- a/test/Spring/Spring.Core.Tests/Validation/HelperClasses.cs
+++ b/test/Spring/Spring.Core.Tests/Validation/HelperClasses.cs
@@ -27,12 +27,30 @@ using Spring.Validation.Actions;
 
 namespace Spring.Validation
 {
+    public abstract class BaseTestValidator : BaseValidator
+    {
+        private bool _wasCalled;
+
+        public bool WasCalled
+        {
+            get { return _wasCalled; }
+        }
+
+        public override bool Validate(object validationContext, IDictionary contextParams, IValidationErrors errors)
+        {
+            _wasCalled = true;
+            return base.Validate (validationContext, contextParams, errors);
+        }
+    
+    }
+
     /// <summary>
     /// Helper classes for validation tests.
     /// </summary>
     /// <author>Aleksandar Seovic</author>
-    public class TrueValidator : BaseValidator
+    public class TrueValidator : BaseTestValidator
     {
+
         public TrueValidator()
         {}
 
@@ -47,7 +65,7 @@ namespace Spring.Validation
         }
     }
 
-    public class FalseValidator : BaseValidator
+    public class FalseValidator : BaseTestValidator
     {
         public FalseValidator()
         {