# yum list | grep -i cron
Repository base is listed more than once in the configuration
crontabs.noarch                          1.10-7                 installed       
anacron.i386                             2.3-32                 base            
gnome-crontab.x86_64                     0.0.5-0.el4.rf         rpmforge        
perl-Config-Crontab.x86_64               1.20-1.el4.rf          rpmforge        
perl-DateTime-Event-Cron.noarch          0.07-1.2.el4.rf        rpmforge        
perl-Set-Crontab.noarch                  1.00-1.2.el4.rf        rpmforge        
vixie-cron.i386                          4:4.1-44.EL4           base