Index: src/main/java/org/apache/jackrabbit/core/state/SharedItemStateManager.java
===================================================================
--- src/main/java/org/apache/jackrabbit/core/state/SharedItemStateManager.java	(revision 750889)
+++ src/main/java/org/apache/jackrabbit/core/state/SharedItemStateManager.java	(working copy)
@@ -446,6 +446,11 @@
      * Disposes this <code>SharedItemStateManager</code> and frees resources.
      */
     public void dispose() {
+        // remove virtual item state providers
+        for (int i = 0; i < virtualProviders.length; i++) {
+            virtualProviders[i].removeListener(this);
+        }
+        virtualProviders = new VirtualItemStateProvider[0];         
         // clear cache
         cache.evictAll();
     }