Did anyone solve the poo's problem?

[mdmonja]

Please, please let me know if anyone solved the poo on the floor problem.
Let me know if you read some post on the forum or heard by someone who managed to solve this problem that so many cats have.
I also have a cat with this problem and I read a lot of advice about what to do but I'd really like to know if there's someone's cat with this problem (that refused to poo on LK and not only poo on the floor as a sporadic mistake!) who learned to poo on LK with no more problem.
Thank you very much