For the past few months I've been having this problem where, in the middle of a phone call, the speaker volume will drop almost to nothing, and in a quiet room I'm straining to hear the other person. It doesn't seem to be a software setting, as the volume slider remains on high. After a few minutes the volume returns to normal, by itself. It happens with different people, so I know it's not the other person's phone.

Anyone else experience this? I haven't installed any ROM updates or reg changes for a long time. This is on Verizon, btw.