Thanks for your offer Jason. But there is one problem - such server would have to be here in Prague, at our server rack, due to security reasons. Our main database server cannot be accessed "outside" to prevent hacking and data manipulating.
Moreover, I cannot guarantee that after adding another machine BrainKing will never crash again. I really plan to buy a new server and I hope that it will solve problem - but I am not [and I cannot be] absolutely sure. I have to test it but I cannot ask other people to buy the hardware just for "testing". It would not be fair to them.