Hi,
I am using ImgBurn for burning data DVD's (mainly .AVI's) on Windows XP SP2.
I use quality media (Verbatim, TDK) certified at 16x max - I burn them at 8x. Using format ISO 9660, Joilet, UDF 1.02.
My burner is LG GSA-H10A (latest firmware JL05); my computer specs are AMD Athlon64 3000+, 2 GB RAM, 150GB IDE HDD.
I encountered some problems using ImgBurn:
a) I burn 16x certified discs at 8x. At ~50% of burn, the speed drops to ~4.5x, then up to 6x and remains there for the rest of the time. The Buffer level also varies during these speed changes. This happens nearly to all my discs regarding of brand - TDK, Verbatim, LG and some cheap media.
In some cases, when I burn, the Buffer drops to 0% and remains there (maybe a couple of seconds raises to ~7%). As far as I know, this is bad for burning.
In some cases, when I burn I also have a file sharing client open (no excessive speed so no major disk activity) and Winamp (without visual effects, using 2-11 MB RAM and 0-2% CPU). ImgBurn uses aproximately 90-110 MB of RAM.