<A target="_blank" href="http://blog.nashcom.de/nashcomblog.nsf/dx/policy-to-push-st-server-and-sso-still-broken-in-851-standard-client.htm">Daniel Nashed warns us that, though there were lots</A> of fixes in 8.5.1, there are still a few bugs in the Standard Notes Client. He provides more information on the problem, and the SPR, if you need the fix.