Yes, other people have mentioned that the Sony TV keysets are not working. I went through them with a fine-toothed comb today, and I just cannot figure out what I am doing wrong. From every source I've got, the data looks right. The commands being sent to the IR device driver look right. I have no trouble controlling my Sony DVD player, which uses the same protocol (although not the same keyset).

I'm stumped. There's something very strange going on here...