I am using DVDXCOPY to burn my backup DVDs in a July, 2003 Dell Manufactured Computer with XP Professional. Although I have never received an error message while I'm burning, I have noticed that the DVD backups will sometimes play perfectly and other times will not. This has happened with over 5 different movies in 3 different players. Regardless, it seems that there is an extended delay in playing the backup DVD that is not common on the original DVDs. I am using DVDR+ Memorex media which I bought at CompUSA. I do not know if its worth making some adjustments to my system to try to fix the problem (if there is one)or whether this is a common problem. I have noticed that the problem sometimes happens after the DVDXCOPY backup warning message appears on the screen after you insert the DVD backup; after that message, the menu or movie does not play. But again, most often than not, when the playback problem occurs, the DVDXCOPY warning does not even come up. Any suggestions, would be greatly appreciated.