Are you getting buffer underruns? If so, then the "Seamless Link" buffer underrun protection keeps kicking in and lengthening the write time. I had a similar problem with a CD recorder. It would write fine at 24x, but keep writing coasters and having buffer underruns at 32x. After I installed another HD and defragged everything, the problem went away. Also, I noticed that some background tasks really interfere with cd/dvd writing. Norton AV, if it kicks in, means almost gauranteed coaster, same with almost any P2P app. CPU utilization has nothing to do with it.
Also things to check for:
If your computer is overclocked, keep in mind that the IDE bus can be off specs, and some devices are more tolerant than others. Your HD can be fine while the DVD recorder can be flaky - just about stable enough to write at 4x, but go bonkers at 8x.
The IDE cable - keep it as short as possible. A too long IDE cable can (and I seen this happen many times) give problems.
Inadequate power supply - burners use more power the faster they burn. A power supply just on the edge can give you every single "untraceable" problem in the book. Also, try giving the burner it's own power lead, unshared with anything else.
A friend of mine had a computer that wrote a coaster practically every single time. He tried switching CD writers three or four times, to no avail. The cure? He moved the HD to a different location. His HD (an IBM, I think; or maybe a Quantum - this was a few years ago) vibrated the case so much when seeking, that it kept messing up the CD writers.
What I'm trying to say, is move things around. That sometimes helps.
< Message edited by _Xelas_ -- 2/4/2005 1:38:41 PM >