Comment 49 for bug 1072206

I've been affected by this for quite some time now. I have a NVIDIA Corporation GF108M [NVS 5400M] (rev a1)
on a Thinkpad T530 with i915,nouveau and U14.04.
On an earlier ubuntu same problem. I *think* the problem gets worse as the session ages (many windows open).
Some apps (tkdiff) do it a lot, and repeatingly opening it, may finallyt bring up a good one. Some other apps
now recently starting showing pulldowns that are transparent. Again, retrying it sometimes helps. Super
annoying.

I never have black windows though, mine are always transparent. Only the top bar shows up.