I've had some camera issues as of late, but I don't think they're because of the Flash player. They seem to be driver based. I've had more than one machine not work well at all/lock up etc. using a higher end Logitech HD webcam - but the same camera works flawlessly on other machines. In one case, on a currently deployed kiosk, I had to lower the resolution of the camera significantly to get it to work on the kiosk computer. So... I know this isn't much help - but I would try lowering the resolution and/or testing on a better machine and/or trying out a different webcam.
Thank you for reply.
>>They seem to be driver based
I also suspect about windows update and logitech update. this happend after it.
furthermore I found othere error.
if I change allow and deny in camera and mic dialog repeatly, local camera view is freezed.
it seem to set h264 settings.