SignalR & Windows 7's IIS 7.5 hangs
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I am now testing new Chat with SignalR and IIS/ASP.net 4 and friends (MySQL, etc...)

I can use SignalR with two clients (IE9, Chrome) or one only and it works. after some actions with code (refresh, change, refresh, etc...) I can see that requests to server is frozen for minutes and if I want to work I need to restart IIS.


I took a dump of IIS process, and see a ten open connections to  `poll.ashx/connect?transport=foreverFrame ....` was opened for minutes.
(I am using ashx extenstion to do not use the "runAllManagedModulesForAllRequests", as it hurting performance, it is useless)

I tried `GlobalHost.Configuration.ConnectionTimeout = TimeSpan.FromSeconds(30)` and  `GlobalHost.Configuration.KeepAlive = null`. same problem. I can see in the dump requests opened to 2 minutes or more.


I know that Windows 7's IIS limited to ten running  requests, so I opened Fiddler and abort all sessions.
IIS still hangs after termination.
I tried to close Fiddler (and then - TCP/HTTP connections) - still hangs.


What I can do to stop the "losted" connections? the client (Fiddler or Browser) closed the TCP/HTTP connections and in IIS there are still alive.

I do not use hubs.


Thanks !