thread started by module put to sleep state

Hi everyone,

I've been trying to embed mono within nginx to serve requests with ASP.NET just for learning purposes (I know there is a FastCGI server for mono out there), and I'm running into a problem.
When I call into C# code, mono's runtime creates a thread to serve the request, but this thread is always in sleep state, and for this reason the response never comes, i.e. the browser appears to try to load the page indefinitely.
I have tried to embed the same C# code into a C application that simulates the request (no nginx involved) and the request gets processed normally.

I don't know what kind of information I can show you to help debug the problem, but, so far, this is just a simple handler that pretty much kills nginx's event loop by waiting for the full response to come. I know that if I simulate a quick response in the C# side (without really handling it appropriately, i.e. just creating some buffers with "Hello world") the response comes out nicely.

What could be the cause of this?

Thank you in advance,
Marcelo Zabani.