I have Sony Vegas Pro 11 running on my old core 2 quad 2.4 GHZ desktop as well as my new 6 core 3.5 GHZ desktop. The issue I am having is with my new desktop running the original build and even after upgrading to the latest build (791) is I have issues with audio and video envelopes not staying together after about the 11 minute mark on the timeline after importing video. I do not have this issue with my older desktop that is running with build (595). Is Sony aware of issues with this and is there a way of correcting the issue. I am finding myself doing more than twice the amount of work on my projects because of the issue with build )701).