Maybe I am just lucky but I will try this again. With Ubuntu 8.04, 9.10. Mint 6, Mint 7, when I burn a ISO CD or ISO DVD, I use 4x speed, select Verify data, wait until md5sum is calculated. I the select burn. k3b does its thing, suddenly stops, ejects disk. k3b has never, ever calculated a md5sum after the burn, at least for me.
I do not remember any errors using Lindows, Linspire or Freespire when burning ISO's.
When this first happened using Ubuntu 8.04 to burn a 9.10 ISO, I trashed the disc because of the error. I did a second disk. Same results. On a hunch, I tried the new ISO. It worked. I took the first disk out of the trash and it installed just fine. Ok, I had two good disk. Yes, I mentioned Ubuntu but Mint is based on Ubuntu.
The CD or DVD always installs. I have yet to burn coasters. I have burned three other Linus distros with the same results. Error, but installs and runs just fine. Go figure.
This is the error message.