MacOS – system environment variables set in Mountain Lion

this shell script

find / -type f -perm -u=x -exec lipo -info {} \; 2>/dev/null | grep ppc | egrep -v 'i386|x86'

will print all binary executables (not only applications, but command line executables too) what are ppc but not intel.

Warning: will run really long time (maybe several ten minutes).

The script is really not effective, because will start zilion times the command "lipo" for all regular file. (what are clearly not executables too - like images). If someone want optimize it - feel free ;)

~/.MacOSX/environment.plist is read at session start. If you want your change to it to be tested immediatly you have to restart your session.
A restart of the system is useless.
You can edit this environment initialisation file with:

plutil -convert xml1 environment.plist
vi environment.plist

I advise you to simply recover it to its version prior to your software installation.

Other hint, check all the files which were modified on the date of installation of your unwanted software. If you installed your software 15 days ago, you can perform this with:

find / -mtime -16 -mtime +14 -ls