user sessions are getting mixed.

When i login from one of the accounts from the database i see a different showing up under usernamelbl where as all the information is correct in the database
seems like the user sessions are getting mixed.
code is given below

If Session("Name") = Nothing Then
                Response.Redirect("ImacHome.aspx", False)
            Else
                myname = Session("Name").ToString()
            End If
            Session.Timeout = 100000
            Dim connection As String
            connection ...