I got my wii January 2007 and that summer it started making loud clicking noises with every disc it read.
After awhile GCN discs wouldnt read and Wii games would run slow. Not to mention the clicking was horribly louder than my speakers, so I stoped playing it for a good while.
I eventually had to send it in for repairs and now it runs much nicer though some games seem to still seem to have a loud vibrating noise, wich should be normal but it always makes me concerned.
Brawl is one that does it with audabile noises between menus and the like, but ya, nothing out of normal anymore, even though you can feel the thing vibrating quitet a bit. Still, nothing bad.
This is all with real copies of the games btw.
Im still kinda cuatoius about installing a modchip though Im pretty sure it'll be alright. Though Im hoping it doesnt go out again this summer as I think it had something to do with the heat and maybe the DVD drive disc spinner drying up.
Though after repairs they left the drive pointed slightly to the left, no big deal but kinda odd.
Well, I think I'll probly install a YAOSOM chip anyway xD