omg my cat does the same thing. I tell my FH that its b/c he calls her fat and now she is bulimic, lol.
But I recently our situation got worse. We were out on vacay and my automatic cat box decided to go haywire so the cat could not get in it. Instead she started peeing and pooping by the dresser. After a month with a new litter box that she doesnt like I'm still cleaning up pee! She will poop in the new box but refuses to pee in it!!! ARHHHH. She is 10 yrs old and I can never get rid of her.