@odenskrigare,
The problem seems to be to me, particularly in relevence to those with an interest in Philosophy, to be that matters of belief and matters of knowledge are quite distinct.
As someone with a respect for philosophy, I agree that you can tend to get as far as "I think therefore I am" or "one can doubt everything but the existence of doubt" before you have to start making assumptions.
Based on this I think it's pretty hard to answer questions regarding "knowledge" with definite answers. As I said earlier - pretty much everyone is technically agnostic, because only the most zealous have no feelings of doubt. I refrain from agnosticism not because I don't feel it is a valid position - it is just too broad a category to make much sense. Like answering "human race" to the query "what race are you?" It has something very apparent in its favour - but tells us very little.
To me, the question of "what do you believe" implies more wriggle room than "what do you know". To me saying you believe in something comes with an unspoken caveat that it is based on your experiences, the evidence you have looked at, your hunches, and so on.
Now, you can answer agnostic to this too, why not? I am agnostic on the question of whether or not an alien civilisation exists that rivals ours in terms of technological sophistication. Nothing I understand about the formation of life would throw the idea out of the window, but nothing could possibly confirm it either.
My tendancy to declare myself athiest in terms of God is also made in ignorance of knowledge about the matter. I think it's easy to see how humans have invented gods as a psychological security blanket or ultimate arbitrator of social authority, and that frustrates me as I reckon more people could do without it - to their benefit. However, I don't feel a position of agnosticism is intellectually assailable - even if it is fence-sitting or bet-hedging.