What has happened in the last couple of weeks to google image search?  I used to use it all the time on my laptop, but now it doesn't work on my same laptop.  To search by image, there used to be a search button to launch it once you selected an image to upload.  On my friend's Mac, it automatically searches after uploading, but on my Sony VAIO with Windows 7, it just sits there and does nothing.  The search by URL does still have a Search button, but even if I click that it doesn't search.  Is it just me?  It was working fine until a couple of weeks ago.