/bin/ps shell command broken

I'm running 10.6.3 and recently noticed the /bin/ps command is broken.
$ ps -ef
ps: illegal option -- f
usage: ps [-AaCcEefhjlMmrSTvwXx] [-O fmt | -o fmt] [-G gid[,gid...]]
[-u]
[-p pid[,pid...]] [-t tty[,tty...]] [-U user[,user...]]
ps [-L]
How do you log an issue with Apple?

Yes this discussion should be held in the Mac OS X Technologies Unix forum
As a point of information, /bin/ps -ef also gives me an illegal -f option.
HOWEVER, if I become root, it works
sudo /bin/ps -ef
UID PID PPID C STIME TTY TIME CMD
0 1 0 0 19:58.45 ?? 20:07.86 /sbin/launchd
0 10 1 0 0:03.90 ?? 0:21.57 /usr/libexec/kextd
0 11 1 0 0:24.04 ?? 0:43.67 /usr/sbin/DirectoryService
it works nicely.
Update. The above was run from iTerm session. When I started an Applications -> Utilities -> Terminal session, the /bin/ps -ef WORKED!
Very strange. I wonder what environmental conditions are affecting the ps option parsing. I find it very hard to beleive that it is the actual terminal emulator.
Take this discussion over to Mac OS X Technologies -> Unix forum, and let the other interested Unix users have a go at figuring this out.
Message was edited by: BobHarris

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