I have a very strange problem. I tried to install Linux on an old computer, but no Live CD would boot except Knoppix.
After several attempts, I got to nearly booting Linux Mint Debian edition, and managed to run the Debian (not LMDE, the Debian DVD) installer. However, the Debian installer is extremely slow and as such I decided to run it tomorrow (it's about 5pm).
Here is the link to my post on the Mint forums (to settle out the possible misunderstandings and extra hardware information).
Note that when doing the system profiling on the link I had a Gigabyte GeForce GTX 580. I went back to a GeForce GTX 480 (that's part of what let me boot Debian at all).
Technically I'm getting a new PC in about 2 months, but I want to find out the problem with this one first to avoid having the same problem on the new one. (Going to shop with a Linux CD should freak quite a few people out... I like that but it would be my last resort. Especially considering I'm planning on building it...)