I have no idea what is causing this, sorry, but as you said, it is incredibly sad to see a post with 50 views and no replies, so here is one. Even if it is totally useless.
Wow, no one cares at all do they? I actually had the same problem with my footage, though it was in after effects and final cut. I shot with the master ped at +10 and brought it down in post, I don't know if that has anything to do with it. My friend said it might but he doesn't know stink diddley. So, really this is a pointless comment that has no helpful information but to say that I feel for you because I had the same problem and was also told to suck it newb. God that's depressing.