Don't fall into the trap of looking for a universal interpretation because dreams are really personal, you know? That stuff they mention about feeling trapped might be true, but it could also be way simpler: your brain is just processing work stress or pressure with deadlines, and the frozen computer is the image your mind uses to represent that feeling of "I'm not getting anywhere, I'm stuck"!
What matters is that you reflect yourself on what's happening in your life right now - is there something at work that's got you anxious? some project that feels blocked? pressure somewhere else? Sometimes the recurring dream is just that, your mind telling you "hey, there's something here you're not resolving and it's on your mind".