Here's a small one I took note of a long time ago, but have never mentioned. My profile is complete. Each individual 10% requirement has been fulfilled, but it's stuck on 90% for some reason. There's even a badge for this that I don't have.
You're missing something from your Biography which is required in order to hit the 100% completion. You need to fill in any one of the following fields, in order to earn the credit (this is in the Biography tab of the Profile Settings page):
- Favourite Music
- Favourite Films
- Favourite Books
- Favourite Food
- About Me
Don't ask me why or how these particular entries were chosen and settled on - and like I said, you don't have to fill them ALL in, you only need to fill out at least one of them. Filling out one of these fields will get you to 100%, though I don't know that the badge will generate immediately (it may be among the overnight processing list - so depending on what time the process kicks off, the badge should pop in a day or two after you've completed your profile).
Let me know if you're still having problems...