Comment 78 for bug 186382

Chris Coulson: The fix mentioned here (changing the libwfb.so link) didn't work for me. I still was experiencing the same disappearing (or other wonky-ness) window-borders after changing that link with the restricted drivers. I had read in some other places that some people have experienced this problem since 169.04 and that that version was the last known "good" version that nobody experienced this problem with. I believe I read this on the Compiz / Compiz Fusion forums. It's been a known issue with them for a while and it affects distros other than Ubuntu. IIRC the Compiz team points the finger at Nvidia on this one.

But, it is odd that it worked fine in Gutsy (using the restricted drivers) then it ceased to work in Hardy, even after this "fix".