Phew.....I feel for you Meaux!

I remember on another site I was a member on there was a huge discussion about this same topic. Lots of suggestions as to why all of a sudden a cat would start doing that, I was surprised to say the least!

I Googled and found this site which might give you some insight for your situation, hope it helps.

http://www.marvistavet.com/html/body...e_soiling.html