[Mono-dev] Error before PreInit

[APS]

Hi, I'm using mod_mono to host an asp.net application in apache using CentOS.
Sometimes before PreInit page event I have a strange delay, this time 
I got an error, someone can explain me some possible the reason of this error?

Unhandled ExceptionSystem.Net.Sockets.SocketException: Operation timed out.

Server stack trace:
   at System.Net.Sockets.Socket.Receive (System.Byte[] buf, Int32 
size, SocketFlags flags) [0x00000]
   at Mono.WebServer.ModMonoRequest.FillBuffer (Int32 count) [0x00000]
   at Mono.WebServer.ModMonoRequest.GetClientBlock (System.Byte[] 
bytes, Int32 position, Int32 size) [0x00000]
   at Mono.WebServer.ModMonoWorker.Read (System.Byte[] buffer, Int32 
position, Int32 size) [0x00000]
   at Mono.WebServer.BaseRequestBroker.Read (Int32 requestId, Int32 
size, System.Byte[]& buffer) [0x00000]
   at (wrapper remoting-invoke-with-check) 
Mono.WebServer.BaseRequestBroker:Read (int,int,byte[]&)
   at (wrapper xdomain-dispatch) 
Mono.WebServer.BaseRequestBroker:Read (object,byte[]&,byte[]&,int,int,byte[]&)

Exception rethrown at [0]:

   at (wrapper xdomain-invoke) Mono.WebServer.BaseRequestBroker:Read 
(int,int,byte[]&)
   at (wrapper remoting-invoke-with-check) 
Mono.WebServer.BaseRequestBroker:Read (int,int,byte[]&)
   at Mono.WebServer.ModMonoWorkerRequest.ReadEntityBody 
(System.Byte[] buffer, Int32 size) [0x00000]
   at System.Web.HttpRequest.MakeInputStream () [0x00000]
   at System.Web.HttpRequest.get_InputStream () [0x00000]
   at System.Web.HttpRequest.LoadWwwForm () [0x00000]
   at System.Web.HttpRequest.get_Form () [0x00000]
   at System.Web.UI.Page.DeterminePostBackMode () [0x00000]
   at System.Web.UI.Page.InternalProcessRequest () [0x00000]
   at System.Web.UI.Page.ProcessRequest (System.Web.HttpContext 
context) [0x00000]
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