diff --git a/src/main/org/apache/tools/ant/types/resources/Archives.java b/src/main/org/apache/tools/ant/types/resources/Archives.java
index 0c7c15a4f..106edd666 100644
--- a/src/main/org/apache/tools/ant/types/resources/Archives.java
+++ b/src/main/org/apache/tools/ant/types/resources/Archives.java
@@ -25,6 +25,7 @@ import org.apache.tools.ant.BuildException;
 import org.apache.tools.ant.Project;
 import org.apache.tools.ant.types.ArchiveFileSet;
 import org.apache.tools.ant.types.DataType;
+import org.apache.tools.ant.types.Reference;
 import org.apache.tools.ant.types.Resource;
 import org.apache.tools.ant.types.ResourceCollection;
 import org.apache.tools.ant.types.TarFileSet;
@@ -51,6 +52,7 @@ public class Archives extends DataType
         if (isReference()) {
             throw noChildrenAllowed();
         }
+        setChecked(false);
         return zips;
     }
 
@@ -62,6 +64,7 @@ public class Archives extends DataType
         if (isReference()) {
             throw noChildrenAllowed();
         }
+        setChecked(false);
         return tars;
     }
 
@@ -72,6 +75,7 @@ public class Archives extends DataType
         if (isReference()) {
             return ((Archives) getCheckedRef()).size();
         }
+        dieOnCircularReference();
         int total = 0;
         for (Iterator i = grabArchives(); i.hasNext(); ) {
             total += ((ResourceCollection) i.next()).size();
@@ -86,6 +90,7 @@ public class Archives extends DataType
         if (isReference()) {
             return ((Archives) getCheckedRef()).iterator();
         }
+        dieOnCircularReference();
         List l = new LinkedList();
         for (Iterator i = grabArchives(); i.hasNext(); ) {
             l.addAll(CollectionUtils
@@ -99,12 +104,24 @@ public class Archives extends DataType
      */
     public boolean isFilesystemOnly() {
         if (isReference()) {
-            return ((MappedResourceCollection) getCheckedRef())
-                .isFilesystemOnly();
+            return ((Archives) getCheckedRef()).isFilesystemOnly();
         }
+        dieOnCircularReference();
         return false;
     }
 
+    /**
+     * Overrides the base version.
+     * @param r the Reference to set.
+     */
+    public void setRefid(Reference r) {
+        if (zips.getResourceCollections().size() > 0
+            || tars.getResourceCollections().size() > 0) {
+            throw tooManyAttributes();
+        }
+        super.setRefid(r);
+    }
+
     /**
      * Implement clone.  The nested resource collections are cloned as
      * well.
diff --git a/src/tests/antunit/types/resources/archives-test.xml b/src/tests/antunit/types/resources/archives-test.xml
index 6c4a9fc02..1b5b0b4ca 100644
--- a/src/tests/antunit/types/resources/archives-test.xml
+++ b/src/tests/antunit/types/resources/archives-test.xml
@@ -34,4 +34,63 @@
     <au:assertFileExists
        file="${output}/org/apache/tools/ant/BuildFileTest.class"/>
   </target>
+
+  <target name="testMixingZipsAndTars">
+    <mkdir dir="${output}"/>
+    <tar destfile="${output}/test.tar.gz" compression="gzip">
+      <fileset file="${ant.file}"/>
+    </tar>
+    <copy todir="${output}">
+      <archives>
+        <zips>
+          <fileset dir="../../../../../build/lib"
+                   includes="ant-launcher.jar"/>
+        </zips>
+        <tars>
+          <gzipresource>
+            <file file="${output}/test.tar.gz"/>
+          </gzipresource>
+        </tars>
+      </archives>
+    </copy>
+    <au:assertFileExists
+       file="${output}/org/apache/tools/ant/launch/Launcher.class"/>
+    <basename property="filename" file="${ant.file}"/>
+    <au:assertFileExists file="${output}/${filename}"/>
+  </target>
+
+  <target name="testReference">
+    <mkdir dir="${output}"/>
+    <archives id="ref">
+      <zips>
+        <fileset dir="../../../../../build/lib"
+                 includes="ant-launcher.jar"/>
+      </zips>
+    </archives>
+    <copy todir="${output}">
+      <archives refid="ref"/>
+    </copy>
+    <au:assertFileExists
+       file="${output}/org/apache/tools/ant/launch/Launcher.class"/>
+  </target>
+
+  <target name="testCircularReference">
+    <au:expectfailure
+       message="This data type contains a circular reference.">
+      <copy todir="${output}">
+        <archives id="ref">
+          <zips>
+            <archives refid="ref"/>
+          </zips>
+        </archives>
+      </copy>
+    </au:expectfailure>
+    <au:expectfailure
+       message="This data type contains a circular reference.">
+      <copy todir="${output}">
+        <archives refid="ref"/>
+      </copy>
+    </au:expectfailure>
+  </target>    
+
 </project>