OK I'm getting rather confused over all this - who's really behind the cover up?
The way it was relayed to Michael/Kevin initially by Tom was that Widmore (is that how you spell his name?!

) set everything up regarding the coverup so that no-one else would find the island.
But on the boat, the grey bearded guy seemed to be suggesting that he talked Widmore round into believing it was all a hoax and on a previous episode we heard ( but I can't remember the source now - sorry) that it was actually Ben that set up the hoax plane with the fake bodies and made it look like everyone on the plane was dead so that no-one would find the island.
So - did Widmore set up the hoax plane or did Ben?
Why would Widmore be so interested anyway? I don't understand where he comes to play in it all and the Desmond/Penny thing.
It would make more sense that Ben would want to keep other people from finding the island, but having said that, again why would Widmore be so interested in finding Ben?

Or have I missed the point entirely?!
Now I know I may be blonde, but surely I'm not the only one that none of this makes any sense to?
I don't know about finding out answers with this new season, I seem to have more and more questions!!