PC Mag: Many of us spend a large chunk of our day on the computer. So, when you add up all that time—at home, at school, at work, and on commutes—it's not surprising that we occasionally get frustrated with something on our laptops or desktops. No system is perfect (no, not even a Mac), nor is any peripheral or gadget. And don't get us started on apps and OSes. Actually, let's do sound off.