diff --git a/test/Spring/Spring.Core.Tests/Data/Spring/Objects/Factory/concurrent.xml b/test/Spring/Spring.Core.Tests/Data/Spring/Objects/Factory/concurrent.xml
index 48863bbf..9462abc8 100644
--- a/test/Spring/Spring.Core.Tests/Data/Spring/Objects/Factory/concurrent.xml
+++ b/test/Spring/Spring.Core.Tests/Data/Spring/Objects/Factory/concurrent.xml
@@ -4,15 +4,15 @@
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
 	xsi:schemaLocation="http://www.springframework.net http://www.springframework.net/xsd/spring-objects.xsd">
 
-  <object id="object1"
-      type="Spring.Objects.Factory.ConcurrentObjectFactoryTests$ConcurrentObject, Spring.Core.Tests"
+  <object id="object1"      
+      type="Spring.Objects.Factory.ConcurrentObjectFactoryTests+ConcurrentObject, Spring.Core.Tests"
       singleton="false">
     <property name="date">
       <value>2004/08/08</value>
     </property>
   </object>
   <object id="object2"
-      type="Spring.Objects.Factory.ConcurrentObjectFactoryTests$ConcurrentObject, Spring.Core.Tests"
+      type="Spring.Objects.Factory.ConcurrentObjectFactoryTests+ConcurrentObject, Spring.Core.Tests"
       singleton="false">
     <property name="date">
       <value>2000/02/02</value>
diff --git a/test/Spring/Spring.Core.Tests/Objects/Factory/ConcurrentObjectFactoryTests.cs b/test/Spring/Spring.Core.Tests/Objects/Factory/ConcurrentObjectFactoryTests.cs
new file mode 100644
index 00000000..69024be3
--- /dev/null
+++ b/test/Spring/Spring.Core.Tests/Objects/Factory/ConcurrentObjectFactoryTests.cs
@@ -0,0 +1,106 @@
+#region License
+
+/*
+ * Copyright 2002-2010 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#endregion
+
+using System;
+using NUnit.Framework;
+using Spring.Core.IO;
+using Spring.Objects.Factory.Xml;
+using Spring.Threading;
+
+namespace Spring.Objects.Factory
+{
+    [TestFixture]
+    public class ConcurrentObjectFactoryTests
+    {
+        private IObjectFactory factory;
+
+        private DateTime date1 = DateTime.Parse("2004/08/08");
+
+        private DateTime date2 = DateTime.Parse("2000/02/02");
+
+        [SetUp]
+        public void SetUp()
+        {
+            IResource resource = new ReadOnlyXmlTestResource("concurrent.xml", GetType());
+            factory = new XmlObjectFactory(resource);
+        }
+
+        [Test]
+        public void SingleThread()
+        {
+            for (int i = 0; i < 100; i++)
+            {
+                PerformTest();  
+            }
+        }
+
+        [Test]
+        public void Concurrent()
+        {
+            AsyncTestTask t1 = new ObjectFactoryTask(500, this).Start();
+
+            t1.AssertNoException();
+            
+        }
+
+        
+
+        private void PerformTest()
+        {
+            ConcurrentObject c1 = (ConcurrentObject) factory.GetObject("object1");
+            ConcurrentObject c2 = (ConcurrentObject) factory.GetObject("object2");
+
+            Assert.AreEqual(date1, c1.Date);
+            Assert.AreEqual(date2, c2.Date);
+
+
+        }
+
+        public class ConcurrentObject
+        {
+            private DateTime date;
+
+            public DateTime Date
+            {
+                get { return date; }
+                set { date = value; }
+            }
+        }
+
+        public class ObjectFactoryTask : AsyncTestTask
+        {
+            private ConcurrentObjectFactoryTests test;
+            public ObjectFactoryTask(int iterations, ConcurrentObjectFactoryTests test)
+                : base(iterations)
+            {
+                this.test = test;
+            }
+
+            #region Overrides of AsyncTestTask
+
+            public override void DoExecute()
+            {
+                test.PerformTest();                
+            }
+
+            #endregion
+        }
+    }
+}
\ No newline at end of file
diff --git a/test/Spring/Spring.Core.Tests/Objects/Factory/Config/EnvironmentVariableSourceTests.cs b/test/Spring/Spring.Core.Tests/Objects/Factory/Config/EnvironmentVariableSourceTests.cs
index da85ee45..1504abc1 100644
--- a/test/Spring/Spring.Core.Tests/Objects/Factory/Config/EnvironmentVariableSourceTests.cs
+++ b/test/Spring/Spring.Core.Tests/Objects/Factory/Config/EnvironmentVariableSourceTests.cs
@@ -48,5 +48,14 @@ namespace Spring.Objects.Factory.Config
             // non-existant variable
             Assert.IsNull(vs.ResolveVariable("dummy"));
         }
+
+	    [Test]
+	    public void EnviornmentStuff()
+	    {
+	        long size = Environment.WorkingSet;
+	        int procCount = Environment.ProcessorCount;
+            Console.WriteLine("working set : " + size);
+            Console.WriteLine("Processor count : " + procCount);
+	    }
     }
 }
diff --git a/test/Spring/Spring.Core.Tests/Objects/Factory/DefaultListableObjectFactoryPerfTests.cs b/test/Spring/Spring.Core.Tests/Objects/Factory/DefaultListableObjectFactoryPerfTests.cs
index 895dd1fa..a2b4d210 100644
--- a/test/Spring/Spring.Core.Tests/Objects/Factory/DefaultListableObjectFactoryPerfTests.cs
+++ b/test/Spring/Spring.Core.Tests/Objects/Factory/DefaultListableObjectFactoryPerfTests.cs
@@ -32,7 +32,8 @@ using Spring.Threading;
 namespace Spring.Objects.Factory
 {
     /// <summary>
-    /// This class contains tests related to performance of the object factory implementation.  Ignored by default.
+    /// This class contains tests related to performance of the object factory implementation and some concurrency test.
+    /// The performance test are ignored by default.
     /// </summary>
     /// <author>Mark Pollack</author>
     [TestFixture]
@@ -106,6 +107,12 @@ namespace Spring.Objects.Factory
                               iterations / duration));
         }
 
+        [Test]
+        public void ConcurrencyTest()
+        {
+            AsyncTestTask t1 = new BeanFactoryTask(100).Start();
+            t1.AssertNoException();
+        }
 
     }
 
diff --git a/test/Spring/Spring.Core.Tests/Spring.Core.Tests.2008.csproj b/test/Spring/Spring.Core.Tests/Spring.Core.Tests.2008.csproj
index 6e95001e..0969d3c2 100644
--- a/test/Spring/Spring.Core.Tests/Spring.Core.Tests.2008.csproj
+++ b/test/Spring/Spring.Core.Tests/Spring.Core.Tests.2008.csproj
@@ -319,6 +319,7 @@
     <Compile Include="Objects\Factory\Attributes\MyRequiredAttribute.cs" />
     <Compile Include="Objects\Factory\Attributes\RequiredAttributeObjectPostProcessorTests.cs" />
     <Compile Include="Objects\Factory\Attributes\RequiredTestObject.cs" />
+    <Compile Include="Objects\Factory\ConcurrentObjectFactoryTests.cs" />
     <Compile Include="Objects\Factory\Config\CommandLineArgsVariableSourceTests.cs" />
     <Compile Include="Objects\Factory\Config\ConfigSectionVariableSourceTests.cs" />
     <Compile Include="Objects\Factory\Config\ConnectionStringsVariableSourceTests.cs" />