if you are running that on a LS1 or Kurobox (original, not HG), then you might only get about 1x. IIRC, I got about 1.5x on my KuroHG.
Thanks, I am looking for it for an LS1, however just in the past 30 minutes found and compiled an alternative called acripper on Sourceforge http://sourceforge.net/projects/acripper/
Still missing a good script to get it to get it to work automatically; disc-in disc-out disc-in...and on.. Not sure if I write a "while true do" will cut it
Don't bust-a-gut trying to find it, I can try and modify acripper to be a little more elegant.