some Certificate have Issued automatically

I've implemented 2-tier CA Hierarechy after followed the link bellow , some certificate are issuing automatically while I have not publish any Group policy to issue cert in the domain automatically.howevere users didn't request to give cert.

http://social.technet.microsoft.com/wiki/contents/articles/15037.ad-cs-step-by-step-guide-two-tier-pki-hierarchy-deployment.aspx

as suggested in this link  I ran this command:certutil –dspublish –f rootca.crt RootCA
http://social.technet.microsoft.com/Forums/en-US/winserversecurity/thread/7d0893cd-a2c2-46cf-ae11-0e637dbcfaf2

does it make problem?why issuer is issuing Basic EFS Cert automatically to domain users?