Is Anybody Else Having Problems With GameCube Games?

[NICKtendo DS]

I too have a problem with my gamecube games, though not the same.
My Wii (had 2 GCs before years ago, both died) doesn't read Brawl at all and when I play Sonic Adventure DX or Melee (not sure if the same goes for my other GC games), when loading a section there is a risk an error pops up and the disk stops spinning. Also, when a disk is spinning in my Wii it makes a terrible noise, so I doubt its the lens.
Getting a little on the subject, I have never experienced slowdowns.