Now, I've always used the formula given in the Combat chapter of the core book:
"(Weapon Damage Roll * 10) + Total Attack Power"
The example given under Power Attack also has our buddy Diff multiplying his roll by 10.
But, reading more carefully over other parts of the rules, I find in several other places in the rules it actually states that rolls using Strength- and Magic Dice are multiplied by 5, not 10..
From 'Monster Creation': "All physical and magical damage is calculated in the same way as for players. (Die Roll * 5) + Attack Power."
From 'Glossary': "ALL die rolls based on Strength Dice are multiplied by 5; if your Strength Die roll was an 8, you deal 40 points of damage."
This is just a little thing that's been bugging me. Has no-one else noticed this?