When you burn a PS2 Game on DVDR, Will you do these thing at the same time?

[WDR]

Some of my PS2 DVDR backups skip and some are playing good in my PS2 ver.4.

I am just wondering that is it my fault to make a Bad DVDR?!?!

My computer is running WinXP AthlonXP 2000+ and 768 DDR 333 ram and I use Ritek G03. and when I burning those disk, My newsbin Pro is downloading 125Kb/sec from Newsgroup. sometimes I browser the internet when I am Copying DVDR.

So My question is that when I backing up my Game to DVDR, Should I leave it alone?? or close all the program include Newsbin Pro and stop all the download??