Which exactly version of IE are you using (Help -> About Internet Explorer). Also your version of windows would be handy. This information will let us look in to this matter and hopefully fix the problem.

The problem seems to be related to switching the screenshots - if I open one, close the popup and than open another IE is still alive. This being no real solution for now I can only suggest upgrading to IE 8 or better any other modern browser. Don't get me wrong - we will fix it but it can take some time.

We've fixed the problem. So if you're still using IE7 clear your cache and you're good to go.