Steps to reproduce: 1. Locate an advertising image on the right column of the page. (The problem does not occur with other images on the page; probably because the ad images are inside IFRAMEs.) 2. Ctrl-click or right-click on the image to display a popup menu. 3. Select anything on the menu; "Copy Link" works. 4. Perform a click-and-drag operation starting on any blank or non-link text portion of the page. Result: The ad image moves along with the cursor, as though you are dragging it. Expected: The content under the mouse cursor should be selected as normal. Notes: If the click-and-drag is performed over text, sometimes a few characters under the cursor are selected, but dragging does not enlarge the selection as normal. Before performing the click-and-drag (after step 3) the mouse cursor does not change as expected (e.g., pointing hand over links) and does not trigger hover events as expected. This bug was found in Safari Version 6.0.2 (8536.26.17) and also reproduced on Nightly Version 6.0.2 (8536.26.17, 537+) WebKit-SVN-r136017.