Some users have been experiencing a problem when using a vx lifecam webcam and windows
It seems that the latest version of Flash player is causing the issue. We have found that uninstalling flash player 11 and installing flash player 10 fixes the issue.
Click this link for instructions on uninstalling flash http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html
Download flash player 10 from here