Here is a list of all the information you can read on this topic.
A permanent residence permit allows you to stay in the Netherlands forever. This permit is officially called a "verblijfsvergunning asiel voor onbepaalde tijd" (permanent asylum residence permit).
The Immigration and Naturalisation Service (IND) must decide on your application in time. If this does not happen, you can officially ask the IND to make a decision within 2 weeks. This is called 'in gebreke stellen' (notice of default).