xhonzi said:

Those that have been solved have been underwhelming (the numbers, the four toed statue).

Have those been solved, though? We've learned a lot more about them (though I'm not sure about the numbers), but the writers have always said that the show's big questions wouldn't be answered until the final season anyway, and that the end of Season 5 was the first time we'd have a clearer idea as to where it's all been going. For example, with the statue -- we've finally seen it in its entirety, but we don't know who built it, what it stands for, why it has four toes, etc.

I have faith, as the writers have done an exemplary job thusfar of steadily weaving together all of the myriad storylines on the show, and still maintaining momentum toward their ultimate end. They've always said it's a story with a defined beginning, middle, and end, so the way they've been telling it -- and what the last season is going to be -- is what they've been planning all along. Even if we don't like it, at least it will be what it was meant to be -- and since I've enjoyed the ride so much so far, I'm not expecting tit to be ruined now.

EDIT: Beat me to it, Yoda Is Your Father! :-)