Yum in cron confusion?

[William John Murray]

Thanks for the ideas:

*) cron is installed and running fine; other jobs work OK

*) /var/log/yum.log is there, but does not have this update. But since
  nothing was changed, maybe this is correct 

*) However, 'yum  update' is not working owing to a broken repo,
   so I THINK that maybe all the problem. If this is correct
then it is a shame there is NO LOG ANYYWHERE.

   Bill