3) Why was the rebel pilot who supposedly destroyed the Death Star reported to be on the Death Star days, maybe hours, prior to its destruction? Why was he allowed to escape, and why were several individuals dressed in Stormtrooper uniforms seen helping him?
...
7) Why has their been no investigation into evidence that the droids who provided the rebels with the Death Star plans were once owned by none other than Lord Vader himself, and were found, conveniently, by the pilot who destroyed the Death Star, and who is also believed to be Lord Vader’s son? Evidence also shows that the droids were brought to one Ben Kenobi, who, records indicate, was Darth Vader’s teacher many years earlier! Are all these personal connections between the conspirators and a key figure in the Imperial government supposed to be coincidences?
the full 'facts' here.