Printer models changing back and forth

I updated my Spiceworks installation yesterday and since then all of the printers on my network have been constantly reporting changes to their Model.

(It was version 7 and is still version 7, I can't seem to find an exact version number)

For example:

Model was HP LaserJet 2100 Series, now LaserJet 2100 Series

then 30 minutes or so later for the same printer

Model was LaserJet 2100 Series, now HP LaserJet 2100 Series

Repeat ad infinitum

Spiceworks is reporting like that for all 16 of my printers on an approximate 30 minute interval.

Any assistance would be gratefully received!

Martin