I can confirm this bug on my PowerBook G3 "PDQ/Wallstreet II." From my reading it is probably a duplicate of bug 74282 -- same symptoms, and it affects G3 (non-Altivec) processors.
-- mplayer crash with "illegal instruction" on PPC https://launchpad.net/bugs/78426 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs