In FC6, grep works again: running "grep foo" is only 60% slower than "LANG=C grep foo". It used to be 20000% (twenty thousand percent, or 200 times) slower. Not a day too soon, I'd say. I was getting tired from typing LANG=C in front of every goddamn xargs. It would be awesome if the remaining 60% regression could be addressed, but let's be realistic. Now if only someone designed a UTF-8 locale which did not screw the ordering files in ls output...