hum... its the spring doing its thing..my knees are bad and squeak so the spring sound isnt that annoying - guess you could lube it but thats what the radio button is for
every car ive driven that was a manual had squeaks with the clutch.. should be normal unless its extremly loud, my friend had that problem on his subie 2.5rs... he lubed it came back a week or 2 later... doesnt do any harm though