I haven't seen any other cases like mine, so I'll just assume that it was my lack of intelligent usage of apt-get that probably got me here, but maybe someone else has had the same problem.
Anyway, I have a ppc machine (a Motorola MVEM2600) that was running 3.0 testing. I changed the sources.list file to pull in 3.0r1 stable, and now almost everything is seg faulting. I'm sure it updated libc6, etc so I'm nearly positive this is the problem... I should look at the core dumps to find out for sure. Almost every application seg faults right before exit (ls, apt-get, gzip, etc). Anyway, has anyone experienced the same behavior? I don't have all the packages that were upgraded (I did an apt-get clean) - but I think it was only 17 or so. Nothing serious on this machine, so I'm not really concerned if I have to blow it away, but I wouldn't mind saving some time. -Drew

