Cosmology@home is down for at least 2 weeks now. Can't access website to find what is wrong.
Any1 knows anything?

Cosmology has been in its death throes for as long as the past 2 years. Some time late last year, it became impossible for anyone to log in (SSL error). As of just now, the web server is not accepting connections.
Attempts to contact the site owner, Dr Marius Millea, have been unsuccessful. It is almost as if Dr Millea doesn't care about the people who are crunching his data for him, so long as we continue to crunch it.
I found out that the site is running off a system at the Poincare Institute, Sorbonne University, in Paris. I was going to contact them to inform them of the situation, but instead I decided that I had had enough, and simply removed Cosmology@home from my boinc setup.
As far as I am concerned, C@H is dead -- and it has also been removed from the list of available boinc projects for the reasons stated above.
So my recommendation to you (and to anyone else) is that you just give up on the project, and go do some work for people who will actually appreciate what we are doing. There are plenty of worthwhile projects available, so find something that interests you and go crunching :)