On Sat, 21 Mar 2009 01:53:16 +0200 Ghirai <ghirai at ghirai.com> wrote: > The shareware WinRAR on windows seems to be better implemented (?), as > it uses both cores to the fullest, and as such the time needed to > extract stuff is a lot shorter. IIRC the unix version is portable C, but winrar has a lot of CPU specific optimizations.