Ok. I didn't realize from your earlier posts that it was happening with other GeForce cards as well (and I don't know that you made it clear that it only happened when you manually changed the resolution to 1024x768 as well).
That was my fault -- I hadn't tested it as fully at the time because I didn't have immediate access to all the systems at that time.
As far as switching to 1024x768, this isn't "necessarily" needed -- it depends on the specific card, and there could be OTHER resolutions that ALSO cause the issue. I've randomly tested several resolutions on one of the systems (the one with the FX5200) and found that the issue varied greatly from one res to the next.
The only thing about your described setup I couldn't test was checking it on a TV.
Can you see the same effect when it's displayed on a computer monitor, or only when it's on the TV? If it shows up only on the TV display, then I'd guess two things:
While I do use Theater View for viewing MC on a TV monitor, ALL of my tests have been on computer monitors. I did verify that I could see the problem on the TV, but once I confimed this, I did all the testing on the computer monitor since I could see the exact same issue there. This issue therefore has nothing to do with the TV output, or any interlaced vs progressive signal issues.
1. The buttons that are vibrating are not held perfectly still in MC. They might "jiggle" by as little as 1 pixel, but when viewing it at lower resolutions on an interlaced display this would be enough to cause a distracting effect.
The problem only lasts a few seconds and then STOPS -- i.e. it does not keep going. I scroll such that the scrolling animation happens (i.e. I scroll to the next item below the bottom of the screen or above the top, which causes the list of items to shift one place.) The twitching happens for a few seconds and then stops. On the FX5200, the words themselves twitch, but on the 6800, only the seams between the boxes do it.
Are you POSITIVE that you are following all the conditions, and that you see ZERO movement in the lines between the boxes after the scroll animation? Here are the parameters:
1. Set "Options > Playback > Display settings" to display full screen view at 1024 x 768.
2. Switch to Theater View.
3. Select a Genre or album that has enough items that they will NOT all fit on the screen at the same time.
4. Scroll to the bottom of the visible list, then scroll another item such that the scroll "animation" happens (where one item "grows" into view, and another item "shrinks" out of view.)
5. Immediately after the animation happens, keep your eyes on the general center area of the list and just watch for a few seconds. See if you can see ANY movement in the boxes around the items in the list, or in the words themselves. As I said, on my 6800 systems it's a subtle movement where the lines between the boxes seem to "adjust" to their final positions, and you most likely wouldn't notice it unless you were specifically looking for it.
NOTE ALSO that on my 6800, there is a pause BEFORE the movement happens -- i.e. the scroll animaiton happens, then everything is motionless for a second or so, THEN there is a slight change to several of the lines in between the items in the list.
On the FX5200, both the lines between the items AND the words themselves twitch and take a few seconds to "settle." Based on the "look" of the behavior in these various tests, however, I'm pretty convinced that it's all the same issue.
Thanks for all the feedback on this,
Larry