A problem with using state and custom server controls

[ton]

Hi,
I keep several variables in a statevalue like:
Dim session As SessionState.HttpSessionState =
System.Web.HttpContext.Current.Session

session("connect") = "connectstring"
and
session("user")=MyUserID

I thought that these variables would be the exclusive use of one connected
user/connection.
But I'm certain that with application in a multiuser enviroment these
variables are constantly overwritten.
In stead of exclusive use for one session, the users are sharing the same
values.

What am I missing here. (I have not modified any property of the session
variable)

I've tested it with cookeless and with cookies. The result is the same.
Who can help me.

Ton