Well this just started last night but when I depress the clutch pedal to put it in gear or to change gears while driving, the clutch or something related squeals. And its pretty loud... It doesnt do it when driving only as soon as I touch the pedal to press it down and makes the noise until my foot is off of the pedal.

Let me know what you think it is... My clutch has 15,000 miles on it and was installed last July.