I had problems with the crontab-manager contrib (1.2-1 ), I tried to update it with (1.2-4) but it was also not working...
I would like to remove / reinstall crontab-manager, when i  - yum remove sme-..... - it looks like all is ok but after a reboot the contrib is still there.
yum list installed | grep cron
anacron.i386                         2.3-45.el5.centos                 installed
crontabs.noarch                      1.10-11.el5                       installed
sme-crontab_manager.noarch           1.2-1                             installed
sme-crontab_manager.noarch           1.2-4                             installed
vixie-cron.i386                      4:4.1-81.el5                      installed
How can I remove it and reinstall it ?