The only thing I can find is Half-Troll (Fiend Folio), and it's LA +4. I'm almost interested in trying to homebrew a "troll-blooded" template, with, say, 1 HP per hour healing, sane ability mods, only a +1 or +2 Nat Armor, and no natural attacks or Rend. +2 Strength, +2 Con, -2 Int, +1 NA, Scent doesn't seem overpowered at LA +1.
Still, it may be a bit much for a persistent world that isn't mine. I can look at other characters.