Yeah, I have a similar problem with my 94. Its some kind of ultra slow leak or something. Every once in a while I will start the Jeep and the clutch pedal will go to the floor. I pop the hood, top off the clutch cylinder fluid resevoir and the problem basically disappears for a week to a month or longer. Not one of these things that I need to fix immediately, but if I ever do an extended outdoors expedition away from civilization, it probably wouldn't hurt for me to have the line checked and or replaced.
Over the next 75k miles or so, I will probably change the clutch to one of the upgraded versions. When I first got the Jeep, I was skipping first gear and just pulling away in second gear (probably too much), which did a little wear on the disc. Not a real problem now, but again, something to work on later.