Anti virus def. updates

Well, it is 2004 and most of my clients has norton antivirus 2003 which i renewing their subscibtion by a crack, because i installed norton 2004 on some 20 systems and it gave me some troubles.
Can you suggest me a good anti virus (maybe with firewall , but that the firewall can be disable) that i can install and forget from it for a year ? or more......
Even the corporate version of norton (9.0.338) is not good enough cause it updates itself no more than once a day....
Thanks

Cracks are illegal and shouldnt be used to update programs, also its not allowed to be discussed on this forum.