[K12OSN] OT: bug in /sbin/sort?

[Petre Scheie]

The sort utility (/bin/sort) on my K12LTSP 5 box (FC5) isn't working properly.  When I type

ls -l |sort +4n

I get

sort: open failed: +4n: No such file or directory

rather than a list of files sorted by their size.  It works correctly on my 4.2 (FC4) 
box, and various other linux & unix boxen, just not on this FC5 box.  I don't have any 
other FC5 boxes to test.  Anyone else seeing this?

Petre