This thread/supposed news article is a killer without more details/links.... for all we know he could have been vaping hydrochloric acid.
Knowing what liquid he was vaping is absolutely crucial here - we really cannot make any judgements until this information is known.
AFAIK, both most commonly used bases (glycerin & PG) which form the majority of our eliquids are not oils as they dilute in water.
And as someone else mentioned - could it have been the smoking that killed him? I mean maybe he turned to ecigs because he felt unhealthy (maybe terminally so) and by that stage there was nothing which could help.
Importantly at this point its all speculation and for every negative statement we could find something positive to the contrary to challenge it and vice versa.
I suggest we wait for more information or indeed try and contact the BBC or even his Doctor to get the finer details, because until then anything said on this thread is speculation at best.
Edited by smokindeuce, 28 March 2011 - 07:47 PM.