I am facing problem of Ending - blocked of user status.
What are you ending?
I am also facing the same problem, Many of users status showing "Ending - Blocked", (under AX 2009 > Administration > Common Forms > Online Users. can anybody help to resolve this issue.
Have you tried to restart the client machines that the users are accessing AX on?
Also restarting the AOS would be advisable.
This MSDN link should help http://blogs.msdn.com/b/daxis/archive/2009/01/16/troubleshooting-blocked-spids-in-aos.aspx