do you have a std cable operated clutch, or do you have a magura hydrolic clutch? most likely you have a cable operated clutch.
make sure the cable is adjusted correctly. If you still have a problem, check the basket.
If you have a sftermarket hydrolic clutch, there is a possibility that it isn't engaging completly and you are having some drag. you will have to bleed and adjust the system to get full range of motion.
also, note that a engine not warmed up (or not running) will drag the clutch.
sorry if i posted obvious info, but hey - you never know.