I'm sure the few users who have posted on this are not the only ones experiencing the problem. Although you and I represented the steps to reproduce the combing effect differently the net result appears to be identical. Cyberlink has accepted the steps and samples that I provided as a bug. My hope is that it also corrects the way you are reproducing the issue.
Personally I think a great deal of people don't even notice the issue or just think something weird happened in the video and go on. Hardware can also mask the problem so that might play into it as well. For example my video card has a deinterlacing mode that when enabled "almost" totally masks the problem. Intel Core 2 Quad, 4 GB DDR2 RAM, Vista 64 bit, ATI Radeon HD 3850, Canon HF100