Hey,
I was just merging 0.41 vanilla into pd-extended 0.40 and noticed something worthwhile to point out. It seems there isn't a patch submitted for this, but it is quite simple. Basically, in s_inter.c, 'seteuid()' is used to lose setuid privileges. As far as I understand it, seteuid() allows the program to keep the root privilege and switch back and forth between root and non-root.
In Pd, it seems it should use setuid() which means change to the new UID and lose the old one completely. Once it starts, it shouldn't need to switch back, right? Pd-extended 0.40.3 has this change in it and it seems to work fine.
.hc
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Computer science is no more related to the computer than astronomy is related to the telescope. -Edsger Dykstra