First, try updating your Adobe Flash. Second, I don't recommend using Google Chrome (although I would take Chrome over IE).
If you have connection problems regardless of which browser you're using, chances are it's your internet connection. If you're using wireless internet, that could very well be the culprit.
But I would blame Chrome first and foremost, and then Adobe Flash. Chrome just isn't as compatible with everything as people would like it to be (yet).
Note: Defragging the hard drive will do nothing to or for CC connection problems.