Forms authentication fails in NET1.1

[Arne Håveland]

I have a web system with forms authenticationthat works
good. When I uppgraded from .NET 1.0 to 1.1 I can't leave
the login page. If I change to Server.Transfer
("UserManager.aspx") it works, but if I use
FormsAuthentication.SetAuthCookie("UserManager.aspx",
True) and Response.Redirect("UserManager.aspx", True) it
won't work in ver 1.1 but still do in ver 1.0
/Arne