Index: openide/src/org/openide/explorer/propertysheet/PropertySetModelImpl.java
===================================================================
RCS file: /cvs/openide/src/org/openide/explorer/propertysheet/PropertySetModelImpl.java,v
retrieving revision 1.9
diff -u -r1.9 PropertySetModelImpl.java
--- openide/src/org/openide/explorer/propertysheet/PropertySetModelImpl.java	22 Feb 2004 11:55:48 -0000	1.9
+++ openide/src/org/openide/explorer/propertysheet/PropertySetModelImpl.java	8 Apr 2004 13:24:36 -0000
@@ -66,16 +66,16 @@
         setPropertySets (ps);
     }
     
-    public synchronized int getCount() {
+    public int getCount() {
         return fds.size();
     }
     
-    public synchronized FeatureDescriptor getFeatureDescriptor(int index) {
+    public FeatureDescriptor getFeatureDescriptor(int index) {
         if (index == -1) return null;
         return (FeatureDescriptor) fds.get(index);
     }
     
-    public synchronized int indexOf(FeatureDescriptor fd) {
+    public int indexOf(FeatureDescriptor fd) {
         return fds.indexOf (fd);
     }
     
@@ -93,7 +93,7 @@
         }
     }
     
-    public synchronized void setPropertySets(PropertySet[] sets) {
+    public void setPropertySets(PropertySet[] sets) {
         setCount = sets == null ? 0 : sets.length;
         if (sets == null) sets = new PropertySet[0];
         
Index: openide/src/org/openide/explorer/propertysheet/PropertySheet.java
===================================================================
RCS file: /cvs/openide/src/org/openide/explorer/propertysheet/PropertySheet.java,v
retrieving revision 1.158
diff -u -r1.158 PropertySheet.java
--- openide/src/org/openide/explorer/propertysheet/PropertySheet.java	29 Feb 2004 03:24:30 -0000	1.158
+++ openide/src/org/openide/explorer/propertysheet/PropertySheet.java	8 Apr 2004 13:24:36 -0000
@@ -1036,8 +1036,12 @@
         }
         
         public void nodeDestroyed(org.openide.nodes.NodeEvent ev) {
-            detach();
-            getTable().getPropertySetModel().setPropertySets(null);
+            Mutex.EVENT.readAccess(new Runnable() {
+                public void run() {
+                    detach();
+                    getTable().getPropertySetModel().setPropertySets(null);                    
+                }
+            });
         }
         
         private class PCL implements PropertyChangeListener {