[RummyChick]

Ken Teh ‏@Ken_Teh 16s Reuters report refuting reports that Vietnam officials discovered signal from missing Malaysia #MH370 flight http://bit.ly/1gg8w2S

[acoulterfan]

Per Reuters no signal has been picked up:
http://www.reuters.com/article/2014/03/08/malaysia-airlines-missing-vietnam-idUSL3N0M505Z20140308