diff -r 6517bf8e50d0 -r c46e0c9940d6 src/share/classes/com/sun/tools/doclets/internal/toolkit/taglets/TagletManager.java
--- a/src/share/classes/com/sun/tools/doclets/internal/toolkit/taglets/TagletManager.java	Wed Oct 10 18:34:46 2012 -0700
+++ b/src/share/classes/com/sun/tools/doclets/internal/toolkit/taglets/TagletManager.java	Wed Oct 10 18:44:21 2012 -0700
@@ -449,7 +449,7 @@
             //This known tag is excluded.
             return;
         }
-        StringBuffer combined_locations = new StringBuffer();
+        StringBuilder combined_locations = new StringBuilder();
         for (int i = 0; i < locations.length; i++) {
             if (i > 0) {
                 combined_locations.append(", ");