Every time I clicked on a thumbnail, the window would open then pop behind the main window. Yeah I hate AOL, and wished they would have left Netscape alone. I use to be an IE man, but I like the tab views of Netscape. As far as popups I think it is just the matter of mouse clicks. Click on a thumbnail, click to close window, click to open window....etc..... If it opens in the same window with the thumbnails still there then I only have to click on the next thumbnail. But mainly it is a vanilla and chocalate ice cream thing. Some like on flavor some like another.