Problem with Traffic and Quota Disk

[fechebsd]

People, i see, that all time my log ispcp-vrl-traff.log show this:
antonia:~# cat /var/log/ispcp/ispcp-vrl-traff.log
Files /var/log/apache2/backup/rgtextil.com.ar-traf.log and /var/log/apache2/backup/rgtextil.com.ar-traf.log.perv differ
Files /var/log/apache2/backup/librerialasnieves.com.ar-traf.log and /var/log/apache2/backup/librerialasnieves.com.ar-traf.log.perv differ
Files /var/log/apache2/backup/rpcsistemas.com-traf.log and /var/log/apache2/backup/rpcsistemas.com-traf.log.perv differ
Files /var/log/apache2/backup/mail.log and /var/log/apache2/backup/mail.log.perv differ