A bit off topic. But with the indulgence of other mates here I'll give my opinion.
Firstly it was not totally bug or unfinished at the release. The campaign did have some bugs but most were ironed after 2 patches.
There are still bugs and performance issues that need to be addressed. But BIS devs are known for their commitment in supporting their games. So one thing you can rest assure is that they will support and will solve most of the problems with time.
ARMA II is a fabulous and a very ambitious mil sim project. It's the only real sandbox mil sim experience you have in any platform. Besides, there's an all community creating missions, addons, modd, that turn ARMA's II life expectancy from a couple of months of play into years of great gaming experience.
Today they released another patch, the fourth, where they ironed and improved a few things.
ARMA and OFF are two unique experiences in terms of immersion and playbility. That's what I want and expect in modern gaming.
DerMo of you want to know anything more about ARMA II just PM me and I'll be glad to answer.
Thank you gentleman.