Index: lams_tool_task/src/java/org/lamsfoundation/lams/tool/taskList/util/TaskListItemAttachmentComparator.java
===================================================================
diff -u -r7475d08afc280b5e2e5ddf04e8bf35e3166aaf80 -rc2d8c54fc7d9c6eb52f08ef229e2a2eae448a248
--- lams_tool_task/src/java/org/lamsfoundation/lams/tool/taskList/util/TaskListItemAttachmentComparator.java	(.../TaskListItemAttachmentComparator.java)	(revision 7475d08afc280b5e2e5ddf04e8bf35e3166aaf80)
+++ lams_tool_task/src/java/org/lamsfoundation/lams/tool/taskList/util/TaskListItemAttachmentComparator.java	(.../TaskListItemAttachmentComparator.java)	(revision c2d8c54fc7d9c6eb52f08ef229e2a2eae448a248)
@@ -20,7 +20,6 @@
  * ****************************************************************
  */
 
-
 package org.lamsfoundation.lams.tool.taskList.util;
 
 import java.util.Comparator;
@@ -40,7 +39,13 @@
     @Override
     public int compare(TaskListItemAttachment o1, TaskListItemAttachment o2) {
 	if (o1 != null && o2 != null) {
-	    return o1.getCreated().compareTo(o2.getCreated());
+	    int timestampComparision = o1.getCreated().compareTo(o2.getCreated());
+	    if (timestampComparision == 0) {
+		return o1.getUid() == null ? (o2.getUid() == null ? 0 : -1)
+			: (o2.getUid() == null ? 1 : o1.getUid().compareTo(o2.getUid()));
+	    } else {
+		return timestampComparision;
+	    }
 	} else if (o1 != null) {
 	    return 1;
 	} else {