I have installed my SER on a Debian Sarge. I'm trying it with the Windows Messenger and it works fine, but sometimes, the clients don't see each other. For example, if I'm connected and another user sign in, I can see his status (available) but he see me offline. If I relogon we can see each other normally. I think this is not the normal behaviour, isn't it? My doubt is: The presence agent manage the presence off all users or just redirect the SUSCRIBE or NOTIFY messages?? Thanks!!!!