The Squeak VM had problems on Linux caused by using UUID's. It was not a Smalltalk or VM problem - but a bug that exists in some versions of libuuid on some Linux distributions. This bug was really annoying since from time to time someone complained about it (either on Squeak or Pharo lists).
This was now finally fixed by Levente Uzoni and he is now honored with the "Best Creative Hack Of The Year" award by the vm-developers. Thanks Levente!