Veritas Backup Exec resets date format in Domino

Hi all, We have a Domino 6.5.3 server running on WindowsServer 2003. When we start the Veritas Backup Exec 9.1 with the agent for Lotus Domino it resets the date format to MM/dd/YYYY. The format set in OS is Italian (dd/MM/YYYY. After exiting Backup Exec and a Domino “restart server” the date format is correct.Please - where to look for the problem solution?