Can you show the output of
# chkconfig --list|grep abrt
abrtd 0:off 1:off 2:off 3:on 4:off 5:on 6:off
The abrt service should be on at runlevel 3.
If it is not:
chkconfig --level abrtd on
If it is already set, the look into /var/log/messages for any errors related to abrtd and post them here.