There appears to have been another overnight "glitch" in Google's Blogger-Feedburner systems.
The blog sent out an email of an older article, to all subscribers on Saturday Jan 9, without being set up to do so.
Sincerest apologies for the inconvenience caused to our readers - this 'rogue posting' will be removed to prevent it from randomly happening again.
Thank you for your patience in this matter. We may have to look into the possibility of switching to an alternate blog and/or subscription system.