RE: [Serusers] PA module status

Hi, I read your status report on PA with great interest, as I'm trying to debug presence problems with Windows Messenger 5. All my test users have WM 5 and directly logon onto ser, i.e. no jabber gateway or other clients. If I start off with two users, and each login, they can see each other. If one logs off, the second notices. If the first logs back on again, it *does not* notice (often it does notice later). I've also had situations where a user has logged off, but not all WM clients have noticed. I have searched through all available Ser online docs, and googled "serusers" (there is no searchable archive online I think?).. and finding detailed info on WMs behaviour is not easy. It works most of the time, I have the feeling its almost there.. I've tried following NOTIFY/SUBSCRIBE and they would seem to come when expected... Could you tell me what the status is regarding pure WM5 presence? Am I banging my head on a wall here or is there hope/workarounds? :-) Thanks in advance, Sean Boran