In my case the answer to the first question is two, and they were critical failures. The answer to the second one is none, as I am uber careful with my stuff. I love the look of the case, and I'm sure you're going to enjoy the heck out of it. I have to fall on the side of msolok, though. The *only* thing keeping me from buying a case like this is that it insulates the back of the SP3, where much of the cooling happens. The heat spikes on mine on a fairly regular basis, causing the fans to kick in. It's usually caused by Defender doing whatever it does in the background and some other OS background tasks, but when it does, the back gets pretty warm.