I had some weird glitches with a new ipad mini. Safari was hanging/freezing, bookmarks bar not loading. Settings crashed constantly. Randomly the ipad would just shut down and restart itself. This went on for 10-15 minutes. I rebooted. It kept happening. I was close to wiping the ipad and restoring. I rebooted again, and it went away. Hasn't been back, knock wood. How does that work?