Kenmore Elite 106.73202300?

We have a leak from the ice maker/freezer that constantly drips to the rear of the top level of the frig. We had this problem before, and I had a Sears repairman come out and he fixed it, but it's back again. Our warranty is expired. :(
I keep a bath towel folded up in the back where the leak is and change the towel every couple days. I also put a coffee mug under where the (or one of the) leaks. It fills up every 3 days. The freezer is on number 5, recommended, and also the bottom of the freezer gets a constant layer of ice about 1-2cm. It seems to new to have to buy a new one. Any advice would be great
Thank you

James
November 2009