The future of Ryanair on the airport of Charleroi is still uncertain. Not the price for using the airport, traffic-rights, are the problem but the sound restrictions are the problem. Ryanair wants to expand at the airport, but expanding are more airplanes and then they are above the limit of 6000 points per year.
If they want to expand, the Walloon government has to change this "plafond".
Source: De Standaard
This will be a difficult decision if you know the problems with Zaventem.
BTW: the airport of Ostend confirmed that Ryanair has paid their debts to the airport.

fftopic: I know that EasyJet was talking with BIAC, but this was months ago, for future flights. Somebody knows how this was ending? I think it's a no go.