>According to the execution plan, SQL engine runs 2 separate queries and than merges them. I would bet that the execution plan for a JOIN query would be the same or close. IOW, I don't thibnk that switching to exists changed anything.
>

>SELECT Member.Numero,Member.Nom,Member.Prenom,Member.LastAccess
> FROM Member
> WHERE Member.LastAccess>=@LastAccess AND
>-- And 
>SELECT Monitor.NoMember2 FROM Monitor WHERE Monitor.NoMember=@NoMember
>

>
>I don''t see anything wrong with query itself. Are there any other SQL statement in your system that uses those 2 tables and could cause the deadlock?

Ok, I see. Let me check that. That's probably what causes this. I also got that one one more time today and the traffic was low. So, it is certainly related to another hit that is affecting this. I will let you know.