What I meant to say was that there hadn't been much comment in this thread.
Would be interesting to find out how the same contaminant affects different engine types. There are plenty of other operators in Surabaya, I wonder if they had any issues. Plenty of 330s as well (I can think of a few of the top of my head like GIA, SIA, MAS, EVA, CAL).
You would think something so small to pass through on-board filters would just burn int he can instead of lodging and disturbing the peace inside the FCUs. Must be some pretty tenacious stuff, surely there is other material that can be used as a filtering medium?