It appears that there was a transient problem with the openjdk email server earlier this week and that, as a result, some emails were not sent to the subscriber list.
Of interest to me are two review requests: "Review Request -- 5045147 : When TreeMap is empty explicitly check for null keys in put()" http://mail.openjdk.java.net/pipermail/core-libs-dev/2011-March/006171.html and "Making java.util.Iterator.remove() for the iterators for EnumSet more resilient" http://mail.openjdk.java.net/pipermail/core-libs-dev/2011-March/006122.html Due to the apparent lack of notification I will delay the commit of the EnumSet patch until Monday. Thanks and sorry for the inconvenience, Mike