On Tue, 3 Aug 2010, Jason Hsu, embedded engineer, Linux user wrote:

> Are you sure that the Ubuntu CD is in good condition?  I recently had 
> difficulty with an antiX Linux live CD.  (It booted up, but certain 
> things didn't work.)  The md5sum showed no problems, but the CD was 
> scratched.  I burned antiX Linux to a new CD and had no problems.  So I 
> think certain distros and/or CD drives are finicky.


I've burned Ubuntu CDs that failed the test that is provided as an option 
on the CD.  Now I always run the test before installing.

Mike