I'm having this problem where the joystick controls suddenly lock up in the middle of things. I tried re-calibrating the joystick by hitting alt-c but to no avail. Has anybody else run into this problem? I have a logitech gamepad f310.

Which version of the game are you playing? If you are using 94 or 95 DOS version then you could try changing the "timed" parameter under "[joystick]" in the tie fighter dosbox conf file (in the game's installation folder) to true or false.

edit. You could also try the different "joysticktype" parameters or change it to "auto".