Sorry to hear that.
Can you let us know the OS and browser details so that we can help you better?
Windows 7 Home Premium 64-bit Operating System
Internet Explorer 10
Can you please look at the following document: http://forums.adobe.com/message/5352978#5352978?
There was also a suggestion on checking out the display adapter and driver in the forums for a similar problem which might be solution: http://forums.adobe.com/message/4161061.
Please try the above.