Hi Alexanre!
Thanks for replay.

I call Release() method manualy, but it is not a problem. The problem is that it is working every other time.

When you already have an instance of this object and try to use different methods every other run it hangs up for a min. Advantually it brings a result and next time you run another method it works very fast, but next time it does the same. May be I am doing something wrong, I am a new with RPC server.