It's sort of hard to diagnose the problem without knowing your driving style. If I had to guess though, I would say you're engaging the clutch way too long when you shift (you should be able to shift smoothly using the clutch for only a second or two each time you shift). I had a friend who had a Saab with over 300,000 miles (that's right, three hundred thousand miles) on it with the original clutch. It is very unusual to have to replace it in the first 1,000 miles. If this is your first vehicle with a manual transmission, just keep practicing and it'll become second nature in no time.
