The only things I can really think of are WHen you shift fast at higher rpms it kind of makes a slipping sound and doesn't grip right away, and the rpm's don't drop automatically. Also, if you put it in 5th gear going up a steep ass hill at a low speed, it slips? Or also when you start off, it grips very softly and doesn't really grab that tough if you dump it.
These are all symptoms demonstrated by my friends car when his clutch went out.