I noticed the crashes of guppi on ppc never made it into the guppi bug list. However for everyones information, I built the current package sitting in incoming on Debian ppc sid and the crashes appear to be gone now. I didn't see an explicit mention of a ppc fix in the changelog for guppi however there is a va_list related fix that looks like a likely candidate. Jack ps I am unaware if these crashes were ever duplicated on other non-intel arches.