Firstly, in general the DVD is great and very handy. I just wanted to say I found the Knoppix->Utilities->Hard Disk/CD/DVD Acelleration (sic. acceleration) applet a bit counter-intuitive.

Specifically, to enable DMA on a drive, you have to put a cross in the check-box, and there's no actual indication of the DMA status except this cross.

I had to cross-check with hdparm if a cross indicated enabled or disabled. Could it be themed as a tick, or a description be added to this important-for-performance applet.