Hi there Azilmak,
When I checked your armory you had your Ret gear on so can't really critique your gear. Your current build for Prot (53/18) is fine for threat but you might want to look at fixing up your glyphs. Replace the Seal of Command glyph with either the Holy Wrath or Seal of Vengeance (+10 expertise) glyphs. Either of these will increase you threat potential (Holy Wrath obviously only with undead and demon mobs of course).
When you say you have threat issues are you talking about specific boss fights, trash or just when running heroics? Specifically what heroics if this is the problem as some of the ICC 5mans (Forge of Souls especially) can have tricky trash pulls. Are the dps in your groups overgearing you? Are you switching seals when you have boss fights or just using Seal of Command for everything? What is your hit and expertise rating?
On boss fights are you following a 969 rotation to optimize your threat production? Are you prioritizing certain aoe spells first for when facing trash groups initially?
Edited, Aug 30th 2010 4:38pm by arthoriuss
Edited, Aug 30th 2010 5:57pm by arthoriuss