I have a an AMD Athlon XP +2500 1.8G Desktop w/ 480MB of RAM. On some unprotected DVDs I get read errors when I try to clone them and every thing stops. I have both a DVD ROM and RW. I have tried reading from both with the same problem. I also have a COMPAQ Evo N600 Laptop, Pentium III 1.2G w/ 256MB of RAM. I loaded CloneDVD onto it and everything works fine. Does anyone have any idea what the problem might be?