Audio/Video way out of sync

I am using kdenlive 0.9.2 on Kubuntu 12.04. I just purchased a Logitech C310 so that I could record video with kdenlive. I have Record Monitor configured as follows:

Detected devices: UVC Camera
Video device: /dev/video0
Capture format: YUYV 640x480 (30/1)
Capture audio: PulseAudio

I get both audio and video in the recording, but the audio leads the video by about 1 second. Any idea what I need to change to get audio and video in sync?