Problem with RecordMyDesktop program
Thanks, you just confirmed the same problem I was having. I also have an Intel HD 3000 (Intel DZ68DB Motherboard). With RecordMyDesktop I could not get the video to work because of the same issue. I tried Ubuntu 13.04 (Still in development) and it works perfect. But in 12.04 and 12.10 the only way I could record was using another alternative.
For the Intel HD 3000 Series I recommend Kazam since it is working without any problems and it records very smooth without creating lag in the recorded video or what I am recording at the moment. If you like this idea then feel free to add the PPA:
sudo add-apt-repository ppa:kazam-team/unstable-series
sudo apt-get update
sudo apt-get install kazam
I choose the unstable branch (Which is not that unstable) since it is more updated. It is running very good on the HD 3000.