Looks like fcron has changed its user group from cron to fcron. Once I realised this I have been able to add users to fcron and it works - for users.
However I have quite a number of system level root jobs that I cant list or edit using crontab -e or -l on multiple systems moriah ~ # crontab -e 22:05:13 Could not chdir to /var/spool/cron/fcrontabs: Permission denied moriah ~ # BillK -- gentoo-user@gentoo.org mailing list