I cant believe its the car with so many people having this problem. I mean driving a manual isnt rocket science! Many of us drive our cars hard daily without replacing a clutch in 60k miles. (I am not talking about constant high rpm launches) but seriously... I have owned probably 8 manuals from S4's mustangs, 300zx's, etc etc i have NEVER replaced a clutch/flywheel yet and im a frequent drag strip customer.
It sounds like to me, the clutch isnt fully engaging and is possibly slipping while normal driving. Any of you ever smell burning clutch after driving it?