Been there - done that!
Our clutch got squeeky a while ago and I had to do the WD40 thing down the fork, which fixed it for a while. I think it's starting to come back. If WD40 doesn't fix it then time for new clutch since the gearbox would have to come out.
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Shawn and Belinda Eggins
2003 STR, K&N, Strut brace, Ground wires, Dunlop LM702's, Tint, Mud flaps, Tow, Nudge, Spots, Mats, Rear scuff plate
http://eggins.synthasite.com/