In a project I'm doing I had severe problems in the weekend. Our application runs in a Custom Browser (.NET Console Application with IE component). At the end of the application Flex does three calls to Weborb.aspx. After this the application closes. There are some 300 sessions closing at the same time, so 900 requests to weborb.aspx at the same time. Is it possible that those requests are queued and that somehow ASP.NET or IIS7 first checks whether a connection with the client still exists before handling the request. Maybe it deletes the request when no connection exists anymore (thus throwing away three calls for each client). In our reports we noticed that about 25% of all clients didn't manage to do the last three calls...
thx, Lieven Cardoen