We have a Cuisinart machine, one of the usual ones where you freeze the core. It's only maybe 2 years old (3 at the most). Suddenly the darn thing won't freeze solid! It's been in the freezer for 3 whole days now, and it's still slushy. I used it over the weekend, and it had been in for 3 days before that and never totally froze, either. It's not a freezer issue, as everything else in there is frozen solid. Has anyone else ever had this happen? Do these things just wear out after awhile?