>Who made few years ago the patch for fast machines ?The original patch IIRC was done by Abri. For several reasons they took it off-line sometime afterwards. You can find that patch through wOOdy's site (see wOOdy's document on DZPatch at the Wiki). Later on, MS posted their own patch. That problem, with fast processors, had to do with a simple timing instruction inserted into the original assembler code.
>did you hear something about this ?No. I do not have any experience with USB printers and do not know what kind of problems they may present.