.... My only thought then was it was all down to the filters plus a bit of heat and agitation and thought no more about it.
Very interesting post Enicalyth, thanks!
That bit of heat might just not have been there. Could the temperature of the fuel at the boost pump inlets have been significantly lower than the recorded total fuel temperature according to you (due to suction, ie pressure drop when more thrust was commanded) could this in turn have influenced viscosity enough to cause a restriction and hence cavitation? No water or ice involved in this scenario, nor any post-incident evidence after a certain time.