I've tried all the above fixes & the flip is still broken on my N800 when using camera and internet phone call apps.

Strangely enough, the "Knips" camera program still flips just fine.

Edited later on.....(7pm CST)

Somehow, it got fixed... I was installing/uninstalling stuff....

Flip on the camera still wasn't working. (For anything but the "Knips" camera program)

Then I installed Skype.

I started the Skype application. Then I popped out the camera for the heck of it. All of a sudden, the internet call started up & flip was working!!!!