I had it happen once but not since I've updated the drivers for my video card.
Does it go away when you orbit a little? Have you been able to make it happen? Can you give me any details to pass allong to the SU QA folks?
BTW, I need to resend that chair model. I discovered a few errors but they've been fixed.
I can't make it go away. I have to shut down and restart so I went back to 5 for now. Will try to see if I can get new video card drivers. I am running an older Matrox card with Dual Monitors. Have to look and see what it is and if there is newer driver than what I have.
I will play wit it some more and see if I make it do it. But last time was when I picked objects to make a component. I saved the model as a Version 5 and reverted to 5.
Chair is great. Wife really likes it. We went to our favorite furniture store today and were not impressed. (Here is a gloat) My wife was looking around and said, "You've spoiled me. I guess your going to get your wish and be building my Dinning Room suit". And just trust me, that is a HUGE compliment from my wife.

Made me walk around with a big grin.
Jeff