What could cause clutch chatter

[shibby]

Every once in a while I get a bit of clutch chatter (jerky take offs) when taking off in first gear. Happens more often when it's warmer out. If I let the clutch slip a bit more it goes away. There is no slipage in any other gear, no noise to speak of, can't find any oil leaks, and hasn't been offroad in quite a long time.

Any ideas?

[Mr-B]

have ya bled the slave cylinder? Could be air in the line.  an air bubble will compress at different rates with different temp. Just a hunch tho...
Good Luck

[Dragonmaster]

Warped clutch disk, flywheel or pressure plate.  Could be a combination of all of the above or just one of the above.  I've got the same thing, but only when warm?