1. Another Windows User Account?
2. Resetting IE?
(both are on the web how to do that, so I pause here.)
I am using IE 10 and although the Green Arrow often appears on Google Search results when I hover over the green arrow or click it nothing ever happens.
The only way round this I have found but it has a detrimental effect on the search results is to disable active scripting within the Security Tab in Internet Options / Tools.
This changes the Green Arrow to the text 'Cached' but hopefully there is a much better solution to my problem.