Update some tinyMCE settings to hopefully make IE work better.

document_root/javascript/tinymce.js

@@ -30,5 +30,8 @@ tinyMCE.init({
                    + "-sup,"
                    + "-span[style],"
                    + "br",
-    cleanup_callback : "myCustomCleanup"
+    cleanup_callback : "myCustomCleanup",
+    force_br_newlines : true,
+    force_p_newlines : false,
+    forced_root_block : ''
 });
\ No newline at end of file