(I mean completely silent, as in notifies no one 
Ya, I saw the same thing ... but then again, I never saw much of any detriment to any trap, aside from daggers, stunner, ... etc. (the ones with the immediate physical effect).
Things like heat wave (blows away most of your potions and scrolls), philosophers bane (fries most of your gold?), etc. were just lost on me (as I didn;t notice their effects, until maybe 6-9 months of playing
)
Tools for Wizardry(r) 7