DOC

I had a problem yesterday with My brother's 2004 Vstar 1100. No motion!! He would let out the clutch, the driveshaft would spin, but no wheel movement!! When we took it apart we found that the part they called "clutch hub" which has a gear in the middle of it that meshes with the rear differentil. He ordered the hub, my question is did another problem cause this to happen?? By changing this hub will he be fixing the problem or treating a symptom?? Like I said it's a 2004 but he rides allot, he has about 41000 miles on it!! Any input would be appreciated!! Thanx DOC