just got this reply from Matthias Stirner
> When PacJPG is about to (de)compress bunch of files (E.G. PackJPG img*.jpg), instead of doing them one by one, do a bunch in parrallel.
> That should make a nice bost in performance for dual and quadcore owners at the cost of a little memory.
I actually don't know much about multithreaded programming yet, but what you suggested should be possible (while multithreaded compression of one file is not). I'll consider that, and include it in future packJPG versions if possible. Thanks for the suggestion.
I'm just about to cry