Whine with clutch down can be throwout bearing, and if the pedal is harder it may be that the TOB is binding on the tube. This could also be your burned smell- if when you release the pedal the TOB isn't returning quickly/all the way you could wind up with clutch slippage.

Honestly, the only way you'll really know is to tear it down and see. It may be possible with a helper to have a look at the release fork motion- have the helper repeatedly press/release the clutch and look at where the slave contacts the fork. You could also try to push the boot back and look down in there, but bright lights and a mirror are probably required.