are these symptoms of my clutch failing soon?

[BeatupRolla]

normally from a dead stop i rev up to 2000 rpms and then let go off clutch and it catches fine, but sometimes when i rev up to 2000 rpms and let go of the clutch it shakes like i didnt give it enough gas. thinking could possible be the clutch or transmission or something? this was both done on flat land, of course on up hills u needa give it more gas.. i have done it many times and its always different, sometimes shakes sometimes catches fine..

[SuperRA]

Mines does that too but seems to be only when cold. I don't believe that it's a worn out clutch but rather soft or worn motor mounts. I think if the clutch were worn, you wouldn't be able to launch hard without it slipping which I am able to do.

That's my guess as to what it is.