That is strange... Do the gaming-problems solution list:
Update Browser Update Flash (Shockwave if you want to)- It should be version 10.0.45.2 as of today Update system Reinstall system (If you're desperate) Use another browser (Firefox is a good choice, IE is knows to cause problems) Get a new computer (The older a computer, the harder it is to play new Flash games)
If you still have the problem, check your internet connection or report to Microsoft (Or Apple for Macs).
Anyone thought of the problem maybe being an 'over-protective' ad-blocker or virus scanning programm? They too have a knack of scrambling with the loading progress of a webpage...
Otherwise the only things useful are the suggestions ulimitedpower made, definitely try those!
What game is it? Then we can check if it's just your computer
By the way, your profile says you've not submitted a game. How can you see the space on the homepage? Could it be possible that 'Dan' (I think...) has just not given it the nod yet?