Given the quality of your research, thought I had better do some proper research on who was the first to realistically mention Petrobras - rather than vague dates etc.
Searched posts around 18-19 November and came up with post #4754641 - Palms7 (apologies Palms!!). Quite an extensive post with sound logic.
Post was dated 19/11/2009 @ 5.25pm and I can't remember any earlier mention of Petrobras.
Great work Palms (assuming Petrobras are the eventual farminee & apologies for previously crediting another poster.
Cheers
TM
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