So I started playing this, brings back nice memories except..... Why the heck can I not target with my missiles 90% of the time? I press T to target. I press L to lock. I sit there with the red box in my sights, and pretty close to the ship too. Sometimes, the extra red circle appears, and targets, and it all works nice. Usually though, nothing at all happens. It just sits there targeted with the red box, and if I shoot the missile like that it just goes wherever. What am I doing wrong?

EDIT: Meh, never mind, it seems to be working now. Not sure what was going on.