No.
If you check Tools >> Internet Options >> Security
Then if you look in Restricted Sites, those are the only ones that you should not have access to but you would have had to add them manually so you would know about them.
Try deleteing your browsing cache via Tools.
Try deleting your GR cookie in C:\Documents and Setting\Your Name\Cookies.
If you are having difficulty displaying a family tree on GR then this may be a Adobe Macromedia Flash related problem. There were a lot of problems when GR changed its Family Tree Builder program several months ago and these were related to Macromedia Flash runtime errors.
