1. When you are in maintenance mode and you still manage to introduce more bugs than you are fixing then your are doing something wrong (usually that's a result of limiting the budget of a department and as a consequence hiring less experienced developers)

2. Every new feature the last few years has been ported from iOS and without much care. I still can't believe they have yet to make Siri and Spotlight one unified product (at least make Spotlight more powerful, I can't even set a timer with it).