I bought my Wii about a month and a half ago, and i'm using the cheap component cables from monoprice.com. I recently bought Rayman Raving Rabbids 1, and I noticed in the game where you have to feed the rabbit by drawing the shapes of food, that there was a lot of random blocky pixels and I later noticed a few on the Wii Home Screen but it wasn't as bad. So far I haven't noticed any of these random pixels in Mario Party 8 or Super Mario Galaxy and since it seems to be kind of random I'm hoping I won't have to get the Wii Fixed (it's addicting!) but I'm not sure. The Wii sits inside an enclosed entertainment center, but it has a good foot of empty space behind it.
Any idea what the problem is?
P.S. I did a search, but the old thread linked to another thread @ nintendo.com that has since been deleted.