I believe in the us de-clawing is popular, luckily it doesn't seem to be common place here. My cats have always scrathed on the furniture, but unlike your cat mine does it when I am there, and I would swear she looks at me and comes nearer, as if to say "what you gonna do about that then". A simple short term solution, don't let it in the room when you're not there. If anyone does know a solution I would also be interested.