First off, thanks for your answers.
pfloyd1, here’s some additional info, maybe it will be of some help.
Motherboard: Intel D865Perl
Processor: Pentium IV 3.0GHz
Memory: 2x512MB DDR400
OS: Windows XP Professional SP2
I checked my hardware settings on Control Panel- > System -> Device Manager -> DVD/CD-Rom Drives -> LiteOn DVDRW LH-20A1H, but found nothing related to DMA. Later I tried IDE ATA/ATAPI Controllers and checked Transfer mode: DMA if available.
I think that the cables are okay, otherways, shouldn’t the DVD’s I burnt be unreadable?
coolcolors, I tried burning some avi files with Nero8’s Nero Express (16x, no multisession, MCC’s 16x Verbatim DVD-R media). Later on, I tried burning an 4GB iso image using Alcohol 120%, but I got the same results. Alcohol measured a max speed of 2.2x during the burning progress.
Thanks again for your support.