There is/was a known bug during the change-over from AD to ASC. Several of us actually LOST points! On the last day of AD, Friday April 15, 2011, I had 515 points. On Saturday night, April 16th, when ASC went live, I now had only 505 points! Anyway, I've earned a further 30 points in the last month, so I'm now at 530. There is a thread on this: https://discussions.apple.com/thread/3002188
Since you answered the question while we were still under AD, the suggestion that you marked your own post as "Correct" is invalid as that was impossible to do under the AD system. That ability was added as part of ASC but it does not earn you points.
So what can you do? Well, hopefully a host will see this and correct it, but don't hold your breathe. I'm STILL waiting to hear back from them myself about my missing 10 points.