I've had a look at the Cowclops V2 video sample posted in that thread, and there does appear to be an issue with ghosting caused by a temporal smoothing filter. It only occurs on single frames immediately following a scene change, so only those with very keen eyes will ever notice it during normal speed playback.

Here's a typical example:

http://img214.imageshack.us/img214/213/ghost8kg.jpg

The yellowness to the left of C3PO is a ghost from the previous frame. (The ghosting caused by the "dirt concealment" processing in some places on the laserdisc master of TESB (example here) is actually worse than this, because it affects several frames whenever fast motion occurs.)