Jan 5 18:27:24 x /usr/libexec/fix_prebinding: /sw/bin/ls could not be launched prebound.... then you might want to consider setting the environmental variable DYLD_NO_FIX_PREBINDING (any value will do), as described in the manual page for dyld(1).
Jan 5 18:27:24 x /usr/libexec/fix_prebinding: /sw/bin/ls couldn't be prebound in the past, and probably can't be prebound now.
Jan 5 18:27:24 x /usr/libexec/fix_prebinding: 2003-01-05 18:27:24 +0100: prebinding for ls done.
Put export DYLD_NO_FIX_PREBINDING=true in .bash_profile, or setenv DYLD_NO_FIX_PREBINDING true in .login, depending on what shell and setup you use.
The downside is, of course, that no binaries launched from the shell will be prebound, but until there's a better way to silence fix_prebinding, I prefer being able to read my system.log.

