Never seen this one before. Cron emailed it to me today.
Subject: Cron <root@www5> /usr/sbin/quotaoff -a; /sbin/quotacheck -aug; /usr/sbin/quotaon -a;
quotaoff: /: Operation not supported
quotaoff: /: Operation not supported
quotaon: using //quota.group on
quotaon: /: Operation not supported
quotaon: using //quota.user on
quotaon: /: Operation not supported
Subject: Cron <root@www5> /usr/sbin/quotaoff -a; /sbin/quotacheck -aug; /usr/sbin/quotaon -a;
quotaoff: /: Operation not supported
quotaoff: /: Operation not supported
quotaon: using //quota.group on
quotaon: /: Operation not supported
quotaon: using //quota.user on
quotaon: /: Operation not supported