ear other peoples opinion too! ;)

Well, I totally agree with wildhoney. You should make these things clear before getting even started with the project. And in most cases the clients agree's then and actually understands - what he is paying for. What more is there to say? I personally think it's seldomly a good idea selling the ownership of a code. The programmer should own the code, the client just bought the usage of it. Just like it is done with music, movies, games or any other Application you buy.
Of course if he is willing to pay for it, why not?

__________________
Hello World!