Hi everybody!

I've got a problem. My aplication was developed to allow some 
connections at the same time with the same user and password and without 
session time invalidation. But now, it's necessary to avoid all of this. 
So i've thought to control the different logins with a hashtable in the 
app context, but my problem is that i don't know when an user session 
ends or when the nvigator is closed.

plz, can anybody tell me a way to resolve this?

thx