Video Playback issues with iPad iOS 4.3

After I upgraded my iPad to iOS 4.3, my converted movie using Pavtube stop playing sound. Only movies with 2-channel audio playback.

I playbacked a movie with more than 2 audio channels from the beginning, audio looped but video continued to playback. Then I scrubbed through the video, playback stopped altogether. The only other videos from ituens works fine.

This is because the Pavtube converter only supports 2 channel stereo. The videos using another tool to convert works fine. Hopefully Apple will fix this bug soon.