After a healthy diet of regular deaths, I have checked my EFUSS to find that I have 14 skill points for it at level 7 (Alexander White, Skill Focus pwn). While there's a chance I'm wrong, I'm pretty certain I had over 20 last time I checked although I can't remember when that was.
Definitely haven't spent them on anything and then forgotten it, I think the problem is with them removing themselves when you die and it losing some each time! Or it might have lost them all in one go. I'm sorry I can't be any more specific, I have no idea when the exact date of losing them is.
Are these the points invested in the skills? Do you see an unspent points?
Sorry for the incredibly late response! The points are not invested, I have no unspent points but I am certain I should have more than the points I have invested; 10 points had effectively vanished.