I've completed the 200 achievement points for this, but it doesn't show on my profile - extra frustrating because it's my tenth S-rank.  Is anyone else having this problem with this game?

When did you get them?
It can sometimes take ages even a few weeks for me

I just recently started seeing new games showing up on that list. I think achievement crap is finally being sorted out. Hopefully your S-Rank should show up in a few days here, but it has been over a month now since xbox broke their achievements across the internet, so give it a bit more time.

My Pac-Man game took a little over 2 days to show up. The thing I don't understand is that the achievement progress bar is slightly transparent, does this mean the points are still being processed?