I also see a blank map screen whenever I try to map caches around my house, look at a map of a pocket query, or map an individual cache, BUT, only when using Firefox. With IE, all maps display just fine. With Firefox, I also notice the drop down links across the top do not show when I put the cursor on any of them. With IE, drop downs work just fine. I have preferred using Firefox, but now have to settle for IE when using this web site, and use Windows 7 OS.