Ok, I tried something. You told me that my agility should be up.

Now I have a dozen agility, strength and speed potions.

I drank'em all, giving me like :

Strength : 170
Agility : 185
Speed : 150

Still can't touch the guy <img src="/ubbthreads/images/graemlins/disagree.gif" alt="" /> Sh*t, I hit him like once per 4 swings.