To be brutally honest with you lot: I think the frost DPS numbers just don't add up. I've seen frost DK's critting between 15.000 and 17.000. Think you sort of said it yourself: "work in progress". Don't think that what you're seeing here at the moment is realistic. Just as with the Mage / Warlock DPS, I'm guessing that Frost'll be nerfed when most of the people ding 85. Or it'll scale properly and numbers will turn out the way they should.
My advice? Lay low on the tanking for a while, or just deal with the fact that some DPS will just die due to over-aggro'ing.
Møønbøøt - 80 Tauren Druid // Nøri - 80 Blood Elf Death-Knight // Realm - Talnivarr (EU)
Faith is the first step, even if you can't see the whole staircase... ~ Annie