Hi again, now i made them in debug mode.

http://dl.dropbox.com/u/3669161/hribeiro/mono.zip

http://dl.dropbox.com/u/3669161/hribeiro/Nginx.zip

I have been able to extract the *305 process that gives one error (the files have at least 19 more)

[size=x-small]
2010/03/15 11:27:09 [debug] 3383#0: *305 generic phase: 2
2010/03/15 11:27:09 [debug] 3383#0: *305 post rewrite phase: 32010/03/15 11:27:09 [debug] 3383#0: *305 http upstream request: "/Default.aspx?"
2010/03/15 11:27:09 [debug] 3383#0: *305 http upstream process header
2010/03/15 11:27:09 [debug] 3383#0: *305 malloc: 0811B858:4096
2010/03/15 11:27:09 [debug] 3383#0: *305 recv: fd:18 4096 of 4096
2010/03/15 11:27:09 [debug] 3383#0: *305 http fastcgi record byte: 01
2010/03/15 11:27:09 [debug] 3383#0: *305 http fastcgi record byte: 06
2010/03/15 11:27:09 [debug] 3383#0: *305 http fastcgi record byte: 00
2010/03/15 11:27:09 [debug] 3383#0: *305 http fastcgi record byte: 01
2010/03/15 11:27:09 [debug] 3383#0: *305 http fastcgi record byte: 00
2010/03/15 11:27:09 [debug] 3383#0: *305 http fastcgi record byte: 00
2010/03/15 11:27:09 [debug] 3383#0: *305 http fastcgi record byte: 00
2010/03/15 11:27:09 [debug] 3383#0: *305 http fastcgi record byte: 00
2010/03/15 11:27:09 [debug] 3383#0: *305 http fastcgi record length: 0
2010/03/15 11:27:09 [error] 3383#0: *305 upstream closed prematurely FastCGI stdout while reading response header from upstream, client: 10.0.0.60, server: localhost, request: "GET / HTTP/1.0", upstream: "fastcgi://127.0.0.1:9091", host: "10.0.2.38"
2010/03/15 11:27:09 [debug] 3383#0: *305 http next upstream, 8
2010/03/15 11:27:09 [debug] 3383#0: *305 free rr peer 1 4
2010/03/15 11:27:09 [debug] 3383#0: *305 finalize http upstream request: 502
2010/03/15 11:27:09 [debug] 3383#0: *305 finalize http fastcgi request
2010/03/15 11:27:09 [debug] 3383#0: *305 free rr peer 0 0
2010/03/15 11:27:09 [debug] 3383#0: *305 close http upstream connection: 18
2010/03/15 11:27:09 [debug] 3383#0: *305 event timer del: 18: 1637136716
2010/03/15 11:27:09 [debug] 3383#0: *305 http finalize request: 502, "/Default.aspx?" a:1, c:1
2010/03/15 11:27:09 [debug] 3383#0: *305 http special response: 502, "/Default.aspx?"
2010/03/15 11:27:09 [debug] 3383#0: *305 internal redirect: "/50x.html?"
2010/03/15 11:27:09 [debug] 3383#0: *305 generic phase: 0
2010/03/15 11:27:09 [debug] 3383#0: *305 test location: "/"
2010/03/15 11:27:09 [debug] 3383#0: *305 test location: "50x.html"
2010/03/15 11:27:09 [debug] 3383#0: *305 using configuration "=/50x.html"
2010/03/15 11:27:09 [debug] 3383#0: *305 http cl:-1 max:1048576
2010/03/15 11:27:09 [debug] 3383#0: *305 generic phase: 2[/size]

On mono side:
[size=x-small]
[2010-03-15 11:27:09Z] Debug Accepting an incoming connection.
[2010-03-15 11:27:09Z] Debug Record received. (Type: Params, ID: 1, Length: 529)
[2010-03-15 11:27:09Z] Debug Record received. (Type: BeginRequest, ID: 1, Length: 8)
[2010-03-15 11:27:09Z] Debug Record received. (Type: Params, ID: 1, Length: 0)
[2010-03-15 11:27:09Z] Debug Read parameter. ( = )
[2010-03-15 11:27:09Z] Debug Read parameter. ( = )
[2010-03-15 11:27:09Z] Debug Read parameter. ( = )
[2010-03-15 11:27:09Z] Debug Read parameter. ( = FILENAME/Default.aspx QUERY_STRINGREQUEST_METHODGET CONTENT_TYPE CONTENT_LENGTH
SCRIPT_NA)
[2010-03-15 11:27:09Z] Debug Read parameter. (/Default.aspx
REQUEST_URI/
DOCUMENT_URI/Default.aspx
DOCUMENT_ROOT/home/hr = ibeiro/wwwrootSERVER_PROTOCOLHTTP/1.0GATEWAY_INTERFACECGI/1.1SE)
[2010-03-15 11:27:09Z] Debug Read parameter. (ER_SOFTWAREnginx/0.8.34 REMOTE_ADDR10.0.0.60REMOTE_PORT3050 SERVER_ADDR10.0.2. = 38SERVER_PORT901 SERVER_NAMElocalhostREDIRECT_STATUS200`HTTP_USER_AGENTMozilla/5)
[2010-03-15 11:27:09Z] Debug Read parameter. ( (compatible; Webserver Stress Tool 7; Windows = ); (simulated_by_Webserver_Stress_Tool) HTTP_HO)
[2010-03-15 11:27:09Z] Debug Record sent. (Type: StandardError, ID: 1, Length: 31)
[2010-03-15 11:27:09Z] Debug Record sent. (Type: StandardError, ID: 1, Length: 0)
[2010-03-15 11:27:09Z] Debug Record sent. (Type: EndRequest, ID: 1, Length: 8)
[2010-03-15 11:27:09Z] Debug Record sent. (Type: EndRequest, ID: 1, Length: 8)[/size]

Im still struggling in finding out were is the problem out here...