Riplock on or off makes no difference. I tried tweaked firmware that removes riplock and region restrictions already. I just put the latest T05 official FW back on just in case the edited T03 was the problem. DMA=2 on this drive.
I also installed Samsung's 'Magic Speed Launcher' and set it to maximum to no avail.
As for the media, it's factory pressed music CDs that I'm trying to rip onto my hard drive with EAC/LAME.
Edit: I went over to The Dangerous Brothers and snagged their latest TS05 and I'll try it and get back with the results.