'Enable debugging (more log messages)?' option is set to 'NO', but has never been set to 'YES'.
It does say 'more log messages' not 'no log messages' and if there were no log messages I would not have been able to clear them.
If Redring keeps working ok, I'll leave well alone for now.
EDIT: I did recently upgrade to HDR_FOX_T2_1.02.32_mod_2.19 which may have caused the redring log to work differently.