I am using FC2 and my /sbin/nash is not a link to /sbin/nash-i386. Where did you get your nash program? Do a rpm -q nash.
Sorry cannot help, but if you search something in the rpm database I'd always use
rpm -qa | grep -i whateveryouwanttofind
This takes longer, since rpm -qa lists all installed packages, but you'll find, what you are looking for.
greets Boris