Symlinking /opt-directory to somewhere else has unwanted consequences. The most noticeable consequences are that F-icon in the system tray has a red cross over it and WebUI shows red alert text that none of the daemons are running when in reality they are running normally. Normal daemon status can be inferred by "/etc/init.d/fsma status"-command.
If you do have only small root-partition and have symlinked opt-directory to some other partition (for example /usr/local) then daemon status reporting fails. This can be fixed by using bind-option of mount. Remove symbolic link, add correctly modified line to /etc/fstab and restart the FSAV product. Modify commands to fit better to your situation:
test -L /opt && rm /opt && mkdir /opt
echo "/usr/local /opt none bind 0 0" >> /etc/fstab
mount /opt
/etc/init.d/fsma restart