I believe the statistics do not include the current challenge being voted on. You should be able to see your submission listed on the left hand side of the main page.
I had the same thing last week with my first challenge. It will continue to appear that you haven't submitted any photos until after the voting for the squares is over.
that's most likely because, no one can see who sent the pictures being voted on, ... so if it would be in your profile, ... well that would simply not be clever :Þ
Go to Challenges/Cast Votes/Square. Then go to the last page of images submitted and your image will be at the vety end. You can't vote on your own submission.
