I reported that as a bug to Apple in November. There are a number of related things to this; the Preview pane in the Info window works fine. If you click on an item in a different column view window, it will likely select several items around the item you clicked on as well. As you noted, in icon view, the selection marquee is offset by a few hundred pixels. List view is pretty much unaffected, except for a small drawing glitch that doesn't affect functionality. Also, dragging the scroll bars in the window the movie is playing in causes erratic behavior as well. Apple reviewed my bug report, and notified me that it was a duplicate, so they are aware of the problem, and it will get fixed. However, it's not a massive bug, so it might take another update or two before we get that fix. John <simplymail at ururk.com> writes: > Could you try the following: > Open a new window in the Finder, and change it to column view. > Navigate to a mov file > Play the mov file in the preview that pops up > While the mov file is playing, click on the desktop, and try to select > an area with the mouse - does this cause the mouse to jump around as > well?