Posted elsewhere, but...
I've got a buzzing noise whenever the Wii is accessing the disc. I haven't tried with a GameCube disc as I don't have one.
When I put the disc in, I can hear the sound almost immediately. It doesn't start as a buzz, but it is clear that the issue is related to the drive--sounds like something is out of balance. It hasn't affected gameplay, nor has it damaged any discs thus far. The sound is just really, really, really annoying.
Anyone else experience something like this? What did you do? I'd rather not send off my one-week-old Wii and have it be gone for half a month, if at all possible.