Everytime I open a PDF and try to search the contents of the PDF for specific text, either by pressing ctrl+f or right clicking and selecting find, there is a blue box that comes up after the second or third search result. In orde to continue searching, I have to press the enter key 15-20 times to get the box to go across the screen so I can keep searching. This happens in Adobe Reader XI and in older versions of Adobe Reader. Uninstalling and reinstalling it hasn't done anything to resolve the problem. I've attached a screenshot of what I am seeing.