My old Astra had a new clutch in about 10,000 miles ago. Recently it started to slip on occasions - then today whenever I lifted the clutch into 1st gear the car would judder. After it's in 1st it works fine, all shifts smooth, no slipping or noises. I also noticed today that if I hold it on the clutch on a hill for even a second, there's a pretty nasty irregular clunking sound.
Any ideas what's going on here?