I'm no expert, but with things the way they are right now, and the ecomomy in shambles, I would think they would do whatever they can to avoid 'cancelling' the common shares. Too many people are loosing money, in the markets in general, and I would think/hope that since this is a unique situation, and the market is on the brink of collapse, that everything possible is being done, by the powers that be, to protect ALL shareholders involved. Of course, I could be wrong, though.