Forms Authentication Problem in ASP.NET

[MrBondo]

We are experiencing a problem with .Net web applications running on IIS 5 where we seem to lose the ability to share the same Authentication Cookie. Our .Net web applications use Forms Authentication sharing the same named Authentication Cookie. Once we log onto one of these applications we are able to transfer redirect to another application without needing to log in again. This works great for a period of time, but for unknown reasons it stops working. The transfer redirect to another application requires us to log in again as if the Authentication cookie doesn’t exist or can’t be found. We need to restart IIS and then everything works fine again – sometimes for days. Have any of you had this same problem? Thanks, MB Bondo