Death Lech Kaczynski  

Is the death of Polish president was a mere accident?After April 10 led to a number of conspiracy theories on this subject.Some believe the official version of the others they seek sensation.

I personally believe in as long as the official version but ... but there is much confusion.

a)The official news that the plane was in very good condition published by official sources before examining the remains of the machinery and the decoding black boxes.
b)Lying on grounds of incompetence Polish crew (no knowledge of Russian) and the offensive of the Polish delegation and the Polish crew in landing charges because of pressure from the President of the pilots.
c)Published in the Russian media fakes traveling recorded conversation of the crew before the crash of the tower - supposedly received from government sources in Russia after opening the black box.
d)Mock interview with a Russian flight controller - debunked by professional pilots.
e)Immediately after the disaster detained journalists and materials detained requisitioned
f)For the first few reconciles the Russians had full and exclusive control of the area.
g)Airport equipment for navigation was poorer than 7.04(Prime Minister Tusk's visit to the Katyn)
h)Still not found more bodies

These are the facts - on this basis can be built (or disprove) a lot of theory.
For a full explanation of the circumstances it is necessary to collect a number of compelling information, and only on the basis of a reasonable man can not give an opinion.

I would like to know the opinion on this matter, as this event is perceived abroad Polish.