Dunno where the figures that dont add up came from - they arent in either of the media reports today - but the 880 figure is beyond a shadow of a doubt.
This is from the BAE Systems report:
Approximately 880 signals over a period from 1982 to the date of issue of this report were identified that may be classified as incidents concerning fire or smoke from unknown origins. In all cases, each identified incident was addressed in the immediate term by one or more of the following:
Crew action to extinguish the fire either by using hand extinguishers or selecting the appropriate crew controlled remote suppression system.
Crew action to identify and remove the ignition source by isolating the offending system (which may be a mechanical, electrical or avionics system or a combination of all)...
It may be assumed with some degree of confidence that the overall probability of a minor fire/smoke related occurrence for any given initiating cause will continue to be FREQUENT.
The FREQUENT is in their capitals not mine.