[CentOS] vixie-cron package from RHEL 5 FasTrack?

What is the best way to get the RPM described in the following URL installed on CentOS 5.2:

http://rhn.redhat.com/errata/RHBA-2008-0586.html

I have users who can't run cron jobs because their home directories are NFS mounted, and I believe installing this RPM would fix the problem. I remember reading that the CentOS developers are working on supporting the RHEL FasTrack mechanism, but other than that I am not very familiar with the purpose and workings of FasTrack. For instance, will RHEL 5 Update 3 (and therefore CentOS 5.3) include this fix? Why wouldn't this RPM make it into the current update stream since it was released 6 months ago?

Alfred