Mountain Lion always complains whenever I use any sort of system executable, ps or sudo or whatever:

dyld: DYLD_ environment variables being ignored because main executable (/bin/ps) is setuid or setgid

I don’t have any DYLD_* variables visible running either env or set. What OS X ML means to say is, I don’t like your LD_LIBRARY_PATH env variable. And I do set LD_LIBRARY_PATH in my .bashrc file. I don’t remember why it’s in there, so I just commented it out. Mountain Lion no longer whines about dyld, and nothing’s broken yet.