pr00ne,
I agree with you; totally.
However (I know, I know, never start a sentence with however), if you look at the press reports in Argentina and the the press in surrounding countries, plus the economic blockades, I feel Argentina are putting themselves in a situation where they will have no option but to attempt an invasion.
There are reports of a proposed fishermen "invasion" for political gain. How the Falkland Island police manage this situation would also provide Argentina with political ammunition. It wouldn't matter how the situation would be managed the UK would still come out looking bad.
I am also able to think of a few ways that Argentina could make an invasion, without the use of their navy.