this job just runs the following:-

EXECUTE master.dbo.xp_sqlmaint N'-PlanID 32EC92A0-F05D-4D4E-AB54-0C4CCCE3DD42 -WriteHistory  -VrfyBackup -BkUpOnlyIfClean -CkDB  -BkUpMedia DISK -BkUpLog "F:\MSSQL\BACKUP" -DelBkUps 1WEEKS -CrBkSubDir -BkExt "TRN" -SupportComputedColumn'

It doesn't make any difference if I add...