Yeah, I'm not surprised at hearing Cadillac's CUE system is having rebooting problems.
I am surprised at the slow response to touch (it has a capacitive screen) and I've read numerous reports of the out-of-control increasing volume problem, something MFT banished fairly early on.
"The 2013 Cadillac ATS's ambitious CUE infotainment system was fast-tracked into production and side-stepped usability engineering. It makes MyFordTouch look comparatively excellent.
My prediction: CUE will be deservedly skewered here and elsewhere for its slow response to touch, poor indexing (correspondence to where it is touched), intermittent outright crashing (pictured), illogical menus, pagination and interface, and so on. Just one night in the car and I experienced all of these."