BB Curve :: 9330 - Cannot Lock Keys While Talking

I have a Curve 9330, running OS 6, and I have found a very annoying feature/bug, OR... When I am on an active call, the two possible methods to lock the keys (Mute button, "a" key) do NOT lock the keys.This is most annoying because... I have a bluetooth earpiece, and I am a big fan of using my cell phone "hands free". I can walk around, with my cell phone in my pocket, talking on the phone, moving from room to room, and doing things that might require 2 hands, etc.BUT, because of the feature/bug described above, I can NOT lock the keys once I'm on a call, so I cannot put the Curve in my pocket (or I'll start hitting keys inadvertently). Then, if I want to move, i have to take the Curve with me, so my bluetooth will stay in range. So now must walk around with the Curve in my hand - now I'm only "one-hand free." I cannot put dishes in the sink, or put on a pair of pants, or bring in groceries from the car, etc., etc., etc. - at least not easily.