well, after playing around with the talent calculator i came up with this spec for my frost DK Talent Calculator - World of Warcraft.

However, i am unsure how it compares to one that has been suggested to me Talent Calculator - World of Warcraft.

They both seem to be ok, but will the reduced amount in Bladed armour with acclimation be more usefull than maxed out Bladed armour with Mercilless combat.