I simply would keep my feelers out in case I needed a back-up plan. I try to keep my foot on the networking pedal anyway, but perhaps I would be a bit more open and aggressive in that respect. Feel free to PM if you want more detailed thoughts.
I would not express concern to anyone at the firm. I probably would not even ask about a general trend or any particular individual's departure, though those issues might be fair game. At most, I might ask someone to elaborate if they made unprompted mention of departures or a systemic problem. But that's just me.
Anonymous User wrote:And at most? (Sorry starting to get super paranoid)