If you haven't looked at this list of FTDNA FAQs you might want to.  Several things have changed with the recent update.   http://www.familytreedna.com/faq/answers.aspx?id=9   Some of the changes will be of particular to those of you who have a null value for any marker (value reported as zero)  and those with more than four peak for DYS464.  See number 18, 19, 20 and 29 for additional information on either of these cases.   I suggest everyone take a few minutes to look over you Y-DNA matches.   Thanks.  Jim Barrett - Timpson, TX Barrett Surname DNA Project http://jpbdna.com/barrett-family-dna-project.htm Powell Surname DNA Project http://jpbdna.com/powell-surname-dna-project.htm