I haven't used lossless codec, because I suspect it will be a huge file. I'll try. When I use the DivX codec, I get a general error. I haven't a clue why this happens,it happens on both systems. It will not let me record in DivX.
Edit: aha, it seems you have to download the lossless codec seperately. Ok.

Edit2: I have tried it. It is definately much better. In 16 bit colour, on the AMD64 system, I get a fairly good framerate. I am going to try it on the new system asap.