[CentOS] Missing nss dependency nss-softokn

I'm getting yum update errors when attempting to update nss:

--> Finished Dependency Resolution
Error: Package: nss-3.12.10-2.el6_1.x86_64 (updates)
		Requires: nss-softokn(x86-64) >= 3.12.9
		Installed: nss-softokn-3.12.7-1.1.el6.x86_64
(@anaconda-CentOS-201106060106.x86_64/6.0)
		   nss-softokn(x86-64) = 3.12.7-1.1.el6

I realize I need to swap in the 6.1 ISO on our internal mirror but the
missing package doesn't appear to be on the mirrors either.

I can't see nss-softokn-3.12.10-2.el6_1.x86_64.rpm anywhere on the
mirrors. I checked the updates and cr repos on the Duke mirror for 6.0
and 6.1 but no joy.

Did this one fall through the cracks or are the mirrors still syncing
up?

I'm happy to wait if it's just a timing issue but I wanted to be sure
the list knew, just in case.

./Cal