Invoke() is blocking

Question

From time to time my applications GUI stops redrawing. There a lot of threads that are firing all kinds of events (like timers or network data ready etc.). Also there are a lot

Answer 1

The most likely answer (deadlock) has already been suggested.

Another way to simulate this behaviour is to reduce the number of pool threads and IO completion ports; you haven't called ThreadPool.SetMaxThreads(...) by any chance?