ok, so I run NetBSD (cannot run PS - no DRI), Gentoo on PPC (cannot run PS -too weak) Debian on i686 (cannot run PS - one is too weak, one has a Matrox graphics board), and an obscure GNU/Linux distro on i686 (with Matrox graphics).
I can run PS on OS X or find a strong enough Windows PC, though.
No problems with installing PS so far. But I did not try the ppc machine at all.