<A target="_blank" href="http://blog.darrenduke.net/darren/ddbz.nsf/dx/domino-8.5.1-fp2-if1-released-contains-some-very-important-daos-fixes.htm">Darren Duke says this interim fix contains some very important DAOS fixes</A>. He's included a link to Technote 1426164 and Fix Central to help you out.