My Hotpoint Mistral fridge freezer is leaking water. ?

I have a 10 year old hotpoint mistral FF. The temperartures seems to be okay and there are no error codes. However water can be seen leaking from the bottome of the appliance onto the floor. It used to be periodic but now it is almost constant. There is no water in the drip tray behind the grill so I am not sure where it comes from. The bottom freezer compartment is solid ice and I have to clear it every so often. Is my applaince on the way out?

Helen
October 2011